9. a dosage is prescribed as 8.70 mg of medicine per kg of body weight. how many mg of medicine should be given to a 182 pound person? round your answer to a whole number (the ones place).
Answers
The amount of medicine that should be given to a 182-pound person is 718 mg.
To calculate the dosage of medicine we have to first convert the weight of a person from pound to kg
We know that,
1 pound = 0.454 kg
Thus, the weight of a person weighing 182 pounds is 182 x 0.454 = 82.628 kg.
The dosage prescribed is 8.70 mg of medicine per kg of body weight.
Thus, the dosage for 82.62 kg comes out to be 82.62 x 8.70 = 718.78 mg.
Thus, the amount of medicine that should be given to a 182-pound person is 718 mg.
Read more about Units of weight:
brainly.com/question/18762697
#SPJ4
Related Questions
What is the concentration of hydroxide ion in a 0.060 M aqueous solution of methylamine, CH3NH2? What is the pH?(CH3NH2 = B) (Kb=4.4 x 10-4)
Answers
The concentration of the hydroxide ion is 0.005 M but the pH of the solution is 11.7.
What is the pH?We know that the pH has to do with the concentration of the hydrogen ions that is present in the solution. In this case, we would have to set up the pOH of the solution in order to obtain what is required.
We have to set up the ICE table as shown below;
\(CH_{3} NH_{2}\)(aq) + \(H_{2} O\)(l) ⇔ \(CH_{3} NH_{3} ^+\)(aq) + \(OH^-\)(aq)
I 0.060 0 0
C -x +x +x
E 0.060 - x x x
We need to use the Kb to obtain x
Kb = [ \(CH_{3} NH_{3} ^+\)] [ \(OH^-\)]/[ \(CH_{3} NH_{2}\)]
=4.4 * 10-4 = x^2/ 0.060 - x
4.4 * 10-4 (0.060 - x) = x^2
2.64 * 10^-5 - 4.4 * 10-4x = x^2
Then we form a quadratic equation and solve it.
x^2 + 4.4 * 10^-4x - 2.64 * 10^-5 = 0
x=0.005 M
Now the pOH = - log(0.005 M)
pOH = 2.3
pH = 14 - 2.3
= 11.7
Learn more about pH:https://brainly.com/question/15289741
#SPJ1
14.
A desktop is found to be 1.26 m long and 0.55 m wide. Calculate it area.
Answers
Answer:
0.315m²
Explanation:
1.26m x 0.55m = 0.315m²
2 moles of NO, was placed in an empty I dm' bottle and allowed to reach equilibrium according to the equation:
At equilibrium, 1.2 moles of N,O, dissociated. Calculate the value of the equilibrium constant for the reaction at that
temperature.
Answers
2NO(g) ⇌ N2(g) + O2(g)
According to the problem statement, 2 moles of NO were placed in a 1 dm^3 bottle and allowed to reach equilibrium, and at equilibrium, 1.2 moles of NO had dissociated. This means that the initial concentration of NO was:
[NO]initial = 2 mol / 1 dm^3 = 2 M
And the concentration of NO at equilibrium is:
[NO]equilibrium = (2 - 1.2) mol / 1 dm^3 = 0.8 M
Since the stoichiometry of the balanced equation is 2:1:1 for NO, N2, and O2, respectively, the equilibrium concentrations of N2 and O2 will also be 0.6 M.
The equilibrium constant (Kc) can be calculated using the equilibrium concentrations of the reactants and products, raised to the power of their stoichiometric coefficients. Therefore:
Kc = ([N2][O2]) / ([NO]^2)
Substituting the equilibrium concentrations into the equation, we get:
Kc = (0.6 M x 0.6 M) / (0.8 M x 0.8 M)
Kc = 0.5625
Therefore, the value of the equilibrium constant for the reaction at that temperature is 0.5625. Note that the units of Kc depend on the stoichiometry of the balanced equation. Since the stoichiometric coefficients are all 1, the units of Kc in this case are M^-1
A) 400 gramos de disolución al 6 % m/m. R: 24 g sto. Y 376 g ste. b) 56 gramos de disolución al 30 % m/m. R: 16,8 g y 39,2 g c) 450 gramos de disolución al 10 % m/m R: 45 g y 405 g d) 200 gramos de disolución al 5 % m/m R: 10 g y 190 g e) 450 gramos de disolución al 20 % v/v R: 90 mL y 360 mL f) 980 mL de disolución al 25 % v/v R: 245 mL y 735 mL. g) 50 mL de disolución al 30 % v/v R: 15 mL y 35 Ml
Answers
Answer:
A) 24g soluto y 376g solvente.
B) 16.8g soluto y 39.2g solvente
C) 45g soluto y 405g solvente
D) 10g soluto y 190g solvente
E) 90mL soluto y 360mL solvente
F) 245mL soluto y 735mL solvente
G) 15mL soluto y 35mL solvente
Explanation:
El porcentaje masa/masa (% m/m) se define como la masa de soluto presente en 100g de solución (Soluto + solvente).
De la misma manera, el porcentaje volumen/volumen se define como el volumen de soluto en 100mL de solución:
A) 400 gramos de disolución al 6 % m/m.
400g solución * (6g soluto / 100g solución) = 24g soluto
400g solución - 24g soluto = 376g solvente
b) 56 gramos de disolución al 30 % m/m.
56 gramos de disolución al 30% m/m.
56g solución * (30g soluto / 100g solución) = 16.8g soluto
56g solución - 16.8g soluto = 39.2g solvente
c) 450 gramos de disolución al 10 % m/m
450 gramos de disolución al 10% m/m.
450g solución * (10g soluto / 100g solución) = 45g soluto
450g solución - 45g soluto = 405g solvente
d) 200 gramos de disolución al 5 % m/m
200 gramos de disolución al 5% m/m.
200g solución * (5g soluto / 100g solución) = 10g soluto
200g solución - 10g soluto = 190g solvente
e) 450 mL de disolución al 20 % v/v
450 mL de disolución al 20% m/m.
450 mL * (20mL soluto / 100mL solución) = 90mL soluto
450mL solución - 90mL soluto = 360mL solvente
f) 980 mL de disolución al 25 % v/v
980 mL de disolución al 25% m/m.
980 mL * (25mL soluto / 100mL solución) = 245mL soluto
980mL solución - 245mL soluto = 735mL solvente
g) 50 mL de disolución al 30 % v/v
50 mL de disolución al 30% m/m.
50 mL * (30mL soluto / 100mL solución) = 15mL soluto
50mL solución - 15mL soluto = 35mL solvente
Different kinds of atoms chemically combined to form a substance are.
Answers
Answer:
A chemical compound.
For example...
\(C + H2 + O1 = Cx(H2O)y(carbohydrate)\)
Hope this helps! Have an awesome day! ♣
Which element has similar properties to neon (Ne)?
O Chlorine (CI)
O Selenium (Se)
O Krypton (Kr)
O Bromine (Br)
Answers
Answer:
Krypton
Explanation:
They're both inert gases
Ka is writing a paper about the nutritional benefits of omega-3 fats. One source says overconsumption of these fats can lead to cardiac problems, which the source’s author has personally experienced. Ka has already confirmed that the article appears in a trusted publication, and the author uses logical, moral, and emotional arguments based on evidence. What is the best thing Ka can do next to determine the objectivity of the source?
determine whether the evidence cited reflects more than one side
contact the author directly to learn more about his personal experience
conduct an internet search for “cardiac problems + omega-3 fats”
contrast the article with others written by the same author on different topics
Answers
The best thing Ka can do next to determine the objectivity of the source is conduct an internet search for cardiac problems + omega-3 fats. Thus option C is correct.
What are cardiac problems?Cardiac problems are defined as the problems that occurs in heart and blood vassals of heart.
The common cardiac problems are
Erratic anginaA heart attack.A heart attack.Arrhythmia (improper heartbeats)Disease of the valvesElevated blood pressure.Congenital cardiac problems.Heart problems that run in families.A significant family of polyunsaturated fats is the omega-3 family.
Thus, the best thing Ka can do next to determine the objectivity of the source is conduct an internet search for cardiac problems + omega-3 fats. Thus option C is correct.
To learn more about cardiac problems, refer to the link below:
https://brainly.com/question/28140585
#SPJ1
Answer:
it is A.
Explanation:
determine whether the evidence cited reflects more than one side
You observe that when oil and water combine, oil always rests on top of the water. What can be said about the density of oil and water?
The density of oil must be greater than the density of water.
The density of oil must be less than the density of water.
The density of oil must be the same as the density of water.
Answers
Answer: As a result, when you add oil to a cup of water the two don't mix with each other. Because oil is less dense than water, it will always float on top of water, creating a surface layer of oil.
Rain from the atmosphere caused the water to fall. This water loosened the soil and rock in the geosphere. The landslide negatively affected nearby plants or animals in the biosphere, and it dumped debris into the river, affecting the hydrosphere.
Answers
Answer:
How are the spheres of Earth interrelated? The four spheres of Earth are closely connected to each other. Birds(biosphere) fly through the air (atmosphere), and water (hydrosphere) flows through the soil (lithosphere or geosphere). The spheres of the earth are closely connected to each other.
Who's the first person to reach the moon
Answers
Answer: Neil Armstrong
Explanation
On July 20, 1969, Neil Armstrong became the first human to step on the moon. He and Aldrin walked around for three hours. They did experiments. They picked up bits of moon dirt and rocksExplanation:
Answer:
In 1969, Neil Armstrong was the first person to reach the moon.
Explanation:
A sample of neon is at 89°C and 2 atm. If the pressure changes to 5 atm. and volume remains constant, find the new temperature, in °C.
Answers
(P1 * V1) / T1 = (P2 * V2) / T2
Given:
P1 = 2 atm
T1 = 89°C (convert to Kelvin: 89 + 273 = 362 K)
P2 = 5 atm
V1 = V2 (volume remains constant)
Plugging in the values, we have:
(2 * V) / 362 = (5 * V) / T2
Cross multiplying, we get:
10V = 5 * V * 362
Simplifying further:
10V = 1810V
Dividing both sides by V (volume), we find:
10 = 1810
This equation is not valid, which suggests there might be an error in the given information. Please double-check the values and equations provided to ensure accuracy.
The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and glucose but not to sucrose. Side A is half-filled with a solution of 2 M sucrose and 1 M glucose. Side B is half-filled with 1 M sucrose and 2 M glucose. Initially, the liquid levels on both sides are equal. A U-shaped tube with two arms A and B that are separated by a membrane on the base of U. Arm A is filled with a solution containing 2 molar solution of sucrose and 1 molar solution of glucose. Arm B is filled with a solution containing 1 molar solution of sucrose and 2 molar solution of glucose. The liquid levels are equal in both arms. When the system illustrated above reaches equilibrium, the sugar concentrations on both sides of the U-tube will be ________. 2 M sucrose, 1 M glucose 1.5 M sucrose, 1.5 M glucose 1 M sucrose, 1 M glucose 1 M sucrose, 2 M glucose
Answers
The diagrammatic expression for the solutions in the two arms of the U-tube separated by a membrane that is permeable to water and glucose but not to sucrose is shown in the image attached below.
When the system illustrated above reaches equilibrium, the sugar concentrations on both sides of the U-tube will be 1.5 M sucrose, 1.5 M glucose
From the image attached, if the system approaches equilibrium;
The movement of the solute(i.e. one molecule of sucrose) have the potential to proceed and move to the other arm of the U-shaped tube but with that, the total overall concentration cannot change in the whole U-tube structure due to the fact that the volume of the solvent(water) is constant.
Similarly, both arms of the U-tube shape have the same concentration as well as the same net Kinetic energy of solutes giving them the isotonic condition property.
Now, at equilibrium, the concentration of the sugar on both sides is:
= \((\dfrac{1M +2M}{2})\)
\(\mathsf{=\dfrac{3M}{2}}\)
= 1.5 M sucrose, 1.5 M glucose
Therefore, we can conclude that the concentration of the sugar on both sides at equilibrium is 1.5 M sucrose, 1.5 M glucose.
Learn more about solutions here:
https://brainly.com/question/1616939?referrer=searchResults
which of the following is a weak acid?
A) H2SO4 (Sulfuric acid)
B) HCl (Hydrochloric acid)
C) CH3COOH (Acetic acid)
D) HNO3 (Nitric acid)
correct answer is C).
Answers
When a piece of copper metal at 100ºC was placed into a cup of water at 25ºC, the final temperature of both substances reached 30ºC within a minute. Which of the following statements is TRUE about the transfer of energy between the two substances?
A. Copper lost less energy than the amount of energy gained by water
B. Copper lost more energy than the amount of energy gained by water
C. Copper lost the same amount of energy that was gained by water
D. Copper gained the same amount of energy that was lost by water
Answers
Answer:
imma say C or D
Explanation:
consider the two binary compounds al2o3 and n2o3. which is a binary ionic compound and which is a binary covalent compound? explain. al2o3 is properly named aluminum oxide, but n2o3 is named dinitrogen trioxide. explain fully why one name uses greek prefixes and the other does not.
Answers
N₂O₃ is a binary covalent compound, and Al₂O₃ is a binary ionic compound.
What you mean when you compound?In chemistry, a compound is a substance made up of two or more different chemical elements in a certain ratio. Once the constituents interact with one another, difficult-to-break chemical bonds are formed. These bonds occur as a consequence of atoms sharing or trading electrons.
b) The named dinitrogen trioxide uses Greek prefixes di- and tri- because it is a molecular compound or a covalent compound because it has both non metal atoms .
Greek prefixes are not used for naming Al₂O₃ because it is ionic compound .
To know more about Compounds visit :
https://brainly.com/question/30037191
#SPJ4
N₂O₃ is a binary covalent compound, and Al₂O₃ is a binary ionic compound.
What is compound?In chemistry, a compound is a substance made up of two or more different chemical elements in a certain ratio. Once the constituents interact with one another, difficult-to-break chemical bonds are formed. These bonds occur as a consequence of atoms sharing or trading electrons.
The named Dinitrogen trioxide uses Greek prefixes di- and tri- because it is a molecular compound or a covalent compound because it has both non metal atoms .
Greek prefixes are not used for naming Al₂O₃ because it is ionic compound .
To know more about compounds visit :
brainly.com/question/30037191
#SPJ4
suppose that the average temperature in the current month is 10 degrees warmer than the previous month. about how much less gas should jasmine expect to use this month than the previous month?
Answers
Taking into account that the average temperature in the current month is 10 degrees warmer than the previous month, the less gas should jasmine expect to use this month than the previous month is given as y = 1,226.3 - 19. 87x.
Describe the linear regression line?linear regression can be described as a method for modeling the relationship between a scalar response and one or more explanatory variables. In Simple terms, we can say linear regression is used when there is only one explanatory variable; multiple linear regression is used when there are multiple explanatory variables.
We have that regression line y = 1425 - 19. 87x.
Then, the average temperature in the current month is 10 degrees warmer than the previous month.
so, the average temperature x = x + 10,
then, the average gas consumption (in cubic feet per day) for each month
y = 1425 - 19. 87(x+10).
y = 1425 - 19. 87x - 198.7
y = 1,226.3 - 19. 87x
Therefore, the less gas should jasmine expect to use this month than the previous month is given as y = 1,226.3 - 19. 87x.
Learn more about regression line at: https://brainly.com/question/17004137
#SPJ1
Complete question:
Jasmin is concerned about how much energy she uses to heat her home, so she keeps a record of the natural gas her furnace
consumes for each month from October to May. Because the months are not equally long, she divides each month's
consumption by the number of days in the month. She wants to see if there is a relationship between x = average temperature (in
degrees Fahrenheit) and y = average gas consumption (in cubic feet per day) for each month. Here is a scatterplot along with the
regression line y=1425 - 19. 87x.
Suppose that the average temperature in the current month is 10 degrees warmer than the previous month. About how much less gas should jasmine expect to use this month than the previous month?
Which of the following best support the claim that the cycling of matter and energy in Earth's interior affects
Earth's surface? Select all correct answers!!!!
A)Tectonic plates move together, apart, and past each other.
B)Lava can be observed rising to Earth's surface in some places.
C)The Earth's crust is much cooler than the Earth's interior.
D)The Earth's inner core is composed mostly of solid iron.
Answers
Answer:
am not sure but I think it c
Answer:
it’s A and B and the last one I still am trying to figure out.
Explanation:
How many atoms of hydrogen and oxygen are in 2 molecules of water? ... 7) Using complete sentences, explain the difference between the chemical ... (s) solid, (l) liquid, (g) gas, (aq) aqueous solution (dissolved in water).
Answers
Answer:
its 25
Explanation:
Answer:
your answer should be c i had this qs before
Explanation:
observe: use the oxygen gauge to measure the concentration of dissolved oxygen at several different times. how does the oxygen concentration change over a single day?
Answers
Answer: The oxygen concentration in water changes over a single day as a result of photosynthesis, respiration, decomposition, and other factors.
The oxygen gauge is used to measure the concentration of dissolved oxygen in water at several different times over a single day. This process is known as dissolved oxygen monitoring.
At the start of the day, the oxygen concentration is typically high due to the photosynthesis of aquatic plants. As the day progresses, the oxygen concentration will drop as a result of respiration by the aquatic organisms in the water. Additionally, sunlight can drive the rate of photosynthesis and respiration, which can cause the oxygen concentration to fluctuate over the course of the day.
By the end of the day, the oxygen concentration is usually lower than it was at the start of the day, as a result of the respiration of aquatic organisms and the decomposition of organic matter. However, in some cases, the oxygen concentration can remain high, due to the photosynthesis of aquatic plants.
It is important to note that the oxygen concentration can also be affected by temperature, light, and other factors. The oxygen concentration can vary depending on the environment, and so it is important to measure the oxygen concentration at different times to get a complete picture of the environment.
Overall, the oxygen concentration in water changes over a single day as a result of photosynthesis, respiration, decomposition, and other factors. Monitoring the oxygen concentration at different times can help us to understand the health of the aquatic ecosystem.
Learn more about oxygen concentration here:
https://brainly.com/question/3366914#
#SPJ11
which substance will form a solution when mixed with liquid benzene (c6h6)
Answers
Answer: \(I_{2} (l)\)
Explanation: Because C 6 H 6 is nonpolar substance and I 2 is also nonpolar compound
According to the concept of solubility,iodine will form a solution when mixed with liquid benzene as both are non-polar substances.
What is solubility?Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
Learn more about solubility,here:
https://brainly.com/question/29857840
#SPJ5
The molar mass of a substance can be calculated from its density alone if that substance is an element gas at STP liquid or solid
Answers
The molar mass of a substance can be calculated from its density alone if that substance is a gas at STP.
What is the molar mass of a substance?The molar mass of a substance is the mass of one mole of that substance.
One mole of a substance is the amount of that substance that contains as many elementary entities as there are in 12 g of carbon-12.
The number of particles in 12 g of carbon-12 is the Avogadro number = 6.03 * 10²³ particles.
One mole of all gases occupies the same volume at STP.
Also, the molar mass of a gas is related to the vapor density of that gas by the formula below;
The molar mass of a gas = vapor density * 2Hence, the molar mass of a gas can be determined from the density of the gas by multiplying the vapor density of the gas. by 2.
Learn more about the molar mass of a gas at: https://brainly.com/question/506048
#SPJ1
The convergence of many presynaptic terminals onto one postsynaptic neuron is called
A) temporal summation
B) synaptic plasticity
C) spatial summation
D) an EPSP
Answers
The convergence of many presynaptic terminals onto one postsynaptic neuron is called spatial summation. Therefore, option C is correct.
Spatial summation refers to the process in which multiple presynaptic neurons simultaneously release neurotransmitters onto a single postsynaptic neuron, leading to the integration of their signals. This convergence occurs at the dendrites or cell body of the postsynaptic neuron, where the graded potentials generated by the neurotransmitter binding are summed up. If the combined graded potentials reach the threshold for generating an action potential, it will be triggered in the postsynaptic neuron.
Temporal summation, on the other hand (option A), refers to the process in which a single presynaptic neuron releases neurotransmitters rapidly and repeatedly over a short period of time, causing the postsynaptic neuron to integrate these signals over time.
Synaptic plasticity (option B) refers to the ability of synapses to undergo changes in their strength or efficacy, such as long-term potentiation or long-term depression.
An EPSP (option D) stands for excitatory postsynaptic potential, which is a depolarization of the postsynaptic membrane that makes the postsynaptic neuron more likely to fire an action potential.
In this process, the graded potentials generated by the neurotransmitter release from multiple presynaptic neurons are combined at the postsynaptic neuron's dendrites or cell body, influencing its likelihood of generating an action potential.
To know more about Spatial Summation, visit
https://brainly.com/question/24261198
#SPJ11
a 20.0-g sample of ca contains how many calcium atoms?
Answers
A 20.0 g sample of calcium contains approximately 3.01 x 10^23 calcium atoms.
To determine the number of calcium atoms in a 20.0 g sample of calcium (Ca), we need to use the concept of Avogadro's number and molar mass.
The molar mass of calcium (Ca) is approximately 40.08 g/mol. This value represents the mass of one mole of calcium atoms.
To calculate the number of calcium atoms in the given sample, we can use the following steps:
Determine the number of moles of calcium in the sample:
Number of moles = Mass / Molar mass
Number of moles = 20.0 g / 40.08 g/mol
Use Avogadro's number to convert moles to atoms:
Number of atoms = Number of moles * Avogadro's number
Number of atoms = Number of moles * 6.022 x 10^23 atoms/mol
Substituting the calculated number of moles into the equation:
Number of atoms = (20.0 g / 40.08 g/mol) * (6.022 x 10^23 atoms/mol)
Performing the calculation:
Number of atoms ≈ 3.01 x 10^23 atoms
Therefore, a 20.0 g sample of calcium contains approximately 3.01 x 10^23 calcium atoms.
learn more about "calcium ":- https://brainly.com/question/26636816
#SPJ11
The Earth has been through many periods of warming and cooling in the past.
Identify what these periods known as. Propose what you would expect the climate on Earth to be like during a warming event and a cooling event.
Answers
The periods of warming and cooling that the Earth has been through in the past are known as climate cycles or glacial-interglacial cycles.
During a warming event, we would expect the climate on Earth to be generally warmer, with a higher concentration of greenhouse gases in the atmosphere and higher sea levels due to melting ice caps. This could lead to more extreme weather patterns, including more frequent and intense heatwaves, droughts, and hurricanes.
During a cooling event, we would expect the climate on Earth to be generally colder, with lower concentrations of greenhouse gases in the atmosphere and lower sea levels due to expanding ice caps. This could lead to periods of widespread glaciation and colder temperatures, which could have significant impacts on ecosystems and human populations.
To know more about warming, here
brainly.com/question/923767
#SPJ4
How electrons are being transferred, what components are being reduced or oxidized, and why energy is released.
Answers
The movement of electrons from one atom or molecule to another is referred to as an electron transfer. This movement is known as redox reactions, which are short for reduction-oxidation reactions. The electron donor is oxidized, and the electron acceptor is reduced during this transfer.
During these reactions, electrons transfer from one atom to another, reducing one atom and oxidizing the other. When one atom is oxidized and another is reduced, the reaction is said to be a redox reaction. The atom that loses an electron during this reaction is oxidized, while the atom that gains an electron is reduced.The transfer of electrons creates a potential energy that is then released when the electrons move back to their original state. The movement of electrons is accompanied by a transfer of energy that can be used to power reactions.
The release of energy occurs because the reduced compound is more stable than the oxidized compound. The electrons move from a higher energy level to a lower energy level, releasing energy. Therefore, energy is released as electrons are transferred from one molecule to another, which can then be used for various purposes.
Learn more about Oxidized here,Which identifies an oxidation-reduction reaction?
https://brainly.com/question/13892498
#SPJ11
In the preparation of sulfanilamide, why was aqueous sodium bicarbonate, rather than aqueous sodium hydroxide, used to neutralize the solution in the final step
Answers
In the preparation of sulfanilamide, aqueous sodium bicarbonate is used instead of aqueous sodium hydroxide to neutralize the solution in the final step.
This is because sulfanilamide is an acid and reacts with the strong base sodium hydroxide to form a highly water-soluble salt. However, this salt can be difficult to separate from the water-soluble impurities in the reaction mixture, which can lead to a lower yield of pure sulfanilamide.
On the other hand, sodium bicarbonate is a weaker base and reacts with sulfanilamide to form a less water-soluble salt. This salt can be easily separated from the impurities in the reaction mixture by filtration, resulting in a higher yield of pure sulfanilamide. Furthermore, the use of sodium hydroxide can also lead to the formation of unwanted side products or degradation of the sulfanilamide molecule. Aqueous sodium bicarbonate is a gentler option that does not have these negative effects on the product.
In summary, the use of aqueous sodium bicarbonate to neutralize the solution in the final step of sulfanilamide preparation results in a higher yield of pure sulfanilamide with fewer side products or degradation.
To know more about filtration here
https://brainly.com/question/23945157
#SPJ11
what is the mass of 1.506 x 10^24 atoms of Argon
Answers
Answer:
Mass = 99.875 g
Explanation:
Given data:
Number of atoms of Ar = 1.506× 10²⁴
Mass in gram = ?
Solution:
Avogadro number:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
1.506× 10²⁴ atoms × 1 mol / 6.022 × 10²³ atoms
0.25× 10¹ mol
2.5 mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 2.5 mol × 39.95 g/mol
Mass = 99.875 g
A balloon filled with 47 mL of hydrogen gas at 276 K is placed in a freezer. What will be the new volume if the temperature of the balloon is raised to 456 K?
Answers
Answer:
The new volume of the balloon will be approximately 77.7 mL (3 s.f.).
Explanation:
We can assume that the pressure remains constant, since the balloon is not being compressed or expanded, and is simply being exposed to a different temperature. Therefore, to solve this problem, we can use Charles's Law, which relates the volume and temperature of a gas.
Charles's Law\(\boxed{\sf \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}}\)
where:
V₁ = initial volumeT₁ = initial temperature (in kelvin)V₂ = final volumeT₂ = final temperature (in kelvin)Given the balloon is initially filled with 47 mL of hydrogen gas at 276 K, and its temperature is raised to 456 K:
V₁ = 47 mLT₁ = 276 KT₂ = 456 KSubstitute the given values into the formula:
\(\implies \sf \dfrac{47\;mL}{276\;K}=\dfrac{V_2}{456\;K}\)
Solve for V₂:
\(\implies \sf \dfrac{47\;mL}{276\;K} \cdot 456\;K=\dfrac{V_2}{456\;K} \cdot 456\;K\)
\(\implies \sf V_2=\dfrac{47\;mL\cdot 456\;K}{276\;K}\)
\(\implies \sf V_2=77.6521739...\;mL\)
\(\implies \sf V_2=77.7\; mL\; (3\;s.f.)\)
Therefore, the new volume of the balloon will be approximately 77.7 mL when the temperature is raised to 456 K.
\(\blue{\huge {\mathrm{CHARLES' \; LAW}}}\)
\(\\\)
\({===========================================}\)
\({\underline{\huge \mathbb{Q} {\large \mathrm {UESTION : }}}}\)
A balloon filled with 47 mL of hydrogen gas at 276 K is placed in a freezer. What will be the new volume if the temperature of the balloon is raised to 456 K?\({===========================================}\)
\( {\underline{\huge \mathbb{A} {\large \mathrm {NSWER : }}}} \)
The new volume of the balloon at a temperature of 456 K is 77.7 mL.\({===========================================}\)
\({\underline{\huge \mathbb{S}{\large \mathrm {OLUTION : }}}}\)
We can use Charles' Law to solve this problem, which states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature:
\(\sf\dfrac{V_1}{T_1} = \dfrac{V_2}{T_2}\)where:
\(\sf V_1\) is the initial volume (47 mL),\(\sf T_1\) is the initial temperature (276 K),\(\sf V_2\) is the final volume (unknown), and\(\sf T_2\) is the final temperature (456 K).Solving for \(\sf V_2\), we get:
\(\begin{aligned}\sf V_2& =\sf \dfrac{(V_1 \cdot T_2)}{T_1} \\& =\sf \dfrac{(47\: mL \cdot 456\: K)}{276\: K} \\ & = \boxed{\bold{\:77.7\: mL\:}} \end{aligned}\)
Therefore, the new volume of the balloon at a temperature of 456 K is 77.7 mL.
\({===========================================}\)
\(- \large\sf\copyright \: \large\tt{AriesLaveau}\large\qquad\qquad\qquad\qquad\qquad\qquad\tt 04/02/2023\)
i need help Which of the following shows the correct order in which organs take part in the process of digestion
Answers
Answer:
Mouth
Esophagus
Stomach
The small intestine
Colon (large intestine)
Rectum
Which of the following is an example of a Lewis acid?
O A. NaOH
B. CaCO3
O C. BF3
D. NH3
Answers
Answer:
C. BF3
Explanation:
The boron in BF3 is electron poor and has an empty orbital, so it can accept a pair of electrons, making it a Lewis acid.
Among the following, an example of a Lewis acid is option C. BF₃ Hence the correct option is (C)
What is Lewis Acid ?A Lewis acid is a chemical species that contains an empty orbital which is capable of accepting an electron pair from a Lewis base to form a Lewis adduct.
The boron in BF₃ is electron poor and has an empty orbital, so it can accept a pair of electrons, making it a Lewis acid.
Boron trifluoride BF₃ behaves as Lewis acid because it is an electron-deficient species and it can accept electron pair.
Here we see Boron configuration is 1s²2s²2p¹ and vacant p-orbital exist, which indicates that mean BF₃ has the tendency to accept lone pair, hence BF₃ is lewis acid.
Therefore, Among the following, an example of a Lewis acid is option C. BF₃ Hence the correct option is (C)
learn more about Lewis Acid here ;
https://brainly.com/question/15570523
#SPJ6