Answers
Answer:The moles of NaCL in the 11.3kg bag is 193.36moles
Explanation:
Given that a bag of NaCl = 11.3kg
1kg = 1000g
therefore 11.3 kg = 11,300g
Remember that
No of moles = mass of subatance/ molar mass of substance
The molar mass of NaCl = Na + Cl= 22.989769 + 35.453 =58.442769≈ 58.44g/mol
No of moles = mass of subatance/ molar mass of substance
= 11300g/ 58.44g/mol = 193.36 moles
The moles of NaCL in the 11.3kg bag is 193.36 moles.
Related Questions
plz help ❤️
Explain how the pH of water has a synergistic relationship with other substances.
Provide an example.
Answers
Answer:
Explanation:
he pH of the water will determine the toxic effects, if any, of these substances.
Pure water is neutral with the pH of 7. But when water combines with other substance the pH varies as per the acidity of the combining substance.
What is pH?pH is the measure of acidity of a solution and mathematically it is the negative logarithm of hydrogen ion concentration. Acidic substance have a pH of less than 7 whereas, basic substance have higher pH value.
Water when combines with some acids, its acidity increases. For example acid rain resulting from the reaction of rain water with oxides of nitrogen and Sulphur forming nitric acid and sulphuric acid.
pH of water have a role in the toxic effects of components in water pH and alkalinity of water determines the coagulation of other substances in water.
Hence, the properties of other substance in water is pH dependent and might effect the alkalinity or acidity of water as well the properties of substances in water such as toxicity.
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What is true about dominant alleles? a They almost never appear as the trait. b They appear as the trait only when there are two of them c They appear as the trait over a recessive allele d They appear as the trait if there is not recessive allele
Answers
They appear as the trait over a recessive allele. Statement C) is true about the dominant alleles.
Dominant alleles are genetic variants that, when present in an individual's genotype, are expressed phenotypically, meaning they determine the visible or observable traits. Dominant alleles are represented by capital letters, while recessive alleles are represented by lowercase letters in genetics.
In terms of inheritance, if an individual has at least one copy of the dominant allele, it will be expressed in the phenotype, regardless of the presence of a recessive allele. This is because dominant alleles exert their influence over recessive alleles, thus "dominating" their expression.
To illustrate this, let's consider a specific example using a trait controlled by a single gene with two possible alleles: dominant (A) and recessive (a). If an individual is homozygous dominant (AA), meaning they possess two copies of the dominant allele, the dominant trait will be expressed.
However, if an individual is homozygous recessive (aa), with two copies of the recessive allele, the recessive trait will be expressed since there are no dominant alleles to override it.
Therefore, dominant alleles appear as the trait over recessive alleles, regardless of the presence or absence of a recessive allele. The presence of even a single copy of the dominant allele is sufficient for its expression in the phenotype. Option C
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Name each of the following Acids and Bases: Al(OH)3
Answers
Since this compound has Aluminum and Hydroxide in its composition, when we name it, we will need to use the cation (positively charged ion) before the anion (negatively charged ion), therefore the name will be:
Aluminum hydroxide
A mineral sample has a mass of 48.6 grams and a volume of 18 milliliters. What is the density of the mineral?
Density = Mass divided by Volume
2.7 g/mL
1.9 g/mL
4.6 g/mL
3.5 g/mL
Answers
Answer:
\(\boxed {\boxed {\sf 2.7 \ g/mL}}\)
Explanation:
Density is the mass per unit volume of a substance. It is calculated by dividing the mass by the volume.
\(\rho = \frac{m}{v}\)
The mass of the mineral is 48.6 grams. The volume is 18 milliliters.
m= 48.6 g v= 18 mLSubstitute the values into the formula.
\(\rho= \frac{ 48.6 \ g}{18 \ mL}\)
Divide.
\(\rho = 2.7 \ g/ mL\)
The density of the mineral sample is 2.7 grams per milliliter.
Please help thank you
Answers
Answer:
be pulled into the new star
Explanation:
Because it is heavier, with more mass and more gravitational force than our little Sun.
Ibuprofen can be found in 800 mg doses in over-the-counter analgesics, such as Advil and Motrin. How many grams of iburofen
does such a tablet contain?
800 mg =
g
Answers
The grams of iburofen does such a tablet contain 800 mg = 0.8g Ibuprofen
1 g = 10^-3g = .001g
Ibuprofen has 800 mg doses in over-the-counter analgesic
800g = 800 × .001
= 0.8g
Ibuprofen is Nondteriodal Anti-inflammatory Drug (NSAID)Ibuprofen's Mechanism of Action is Decreases inflammation, pain, and fever through inhibition of cyclooxygenase activity and prostaglandin synthesisnonsteroidal anti-inflammatory medication (NSAID) used for pain relief and to reduce fever by stops inflammation and by blocking formation of cyclo-oxygenase (COX-2) a chemical mediator of inflammatory chemicals. i.e prostaglandinsIt comes under the Class analgesic (reduce pain) and antipyretic (FIRE - reduce fever)e side effects of ibuprofen NSAID are peripheral edema, fluid retention with edema, tinnitus, purpura, petechiae, anorexia, diarrhea, rash, nausea, vomiting, fatigue, dizziness, lightheadedness, anxiety, confusionTo know more about analgesic visit :
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A solution is formed by mixing 15.2 g KOH into
1.200 kg water. Use the periodic table to find the
moles of solute.
Answers
Answer:
There are approximately \(0.271\; \rm mol\) of formula units in that \(\rm 15.2\; g\) of \(\rm KOH\) (the solute of this solution.)
Explanation:
A solution includes two substances: the solute and the solvent. Note the solution here contains significantly more water than \(\rm KOH\). Hence, assume that water is the solvent (as it is in many other solutions.)
The (molar) formula mass of \(\rm KOH\) is necessary for finding the number of moles of
One \(\rm K\) atom, One \(\rm O\) atom, andOne \(\rm H\) atom.The formula mass of \(\rm KOH\) will thus be the sum of:
The mass of one mole of \(\rm K\) atoms, The mass of one mole of \(\rm O\) atoms, andThe mass of one mole of \(\rm H\) atoms.On the other hand, the mass (in grams) of one mole of atoms of an element is (numerically) the same as its relative atomic mass. The relative atomic mass data can be found on most modern periodic tables.
Relative atomic mass data from a modern periodic table:
\(\rm K\): \(39.098\).\(\rm O\): \(15.999\).\(\rm H\): \(1.008\).For example, the relative atomic mass of \(\rm K\) (potassium, atomic number \(19\)) is \(39.098\) (3 sig. fig.) Hence, the mass of one mole of
The formula mass of \(\rm KOH\) is the sum of these three masses:
\(\begin{aligned}& M(\mathrm{KOH}) \\ &\approx 39.098 + 15.999 + 1.008 \\ &= 56.105\; \rm g \cdot mol^{-1}\end{aligned}\).
The number of moles of \(\rm KOH\) formula units in this \(15.2\; \rm g\) sample would be:
\(\begin{aligned}n &= \frac{m(\mathrm{KOH})}{M(\mathrm{KOH})} \\ &\approx \frac{15.2\; \rm g}{56.105\; \rm g \cdot mol^{-1}} \approx 0.271\; \rm mol \end{aligned}\).
Answer:
the answer is 0.271
Explanation:
got the right answer on edg 2020
How many grams of lead(II) nitrate, pb(NO3)2,are present in 4.05 moles
Answers
Answer:
1341.1737 gm in 4.05 moles
Explanation:
From periodic table
mole weight pb = 207.2 gm
N 14.007 *2 = 28.014 g,
O 15.99 *6 = 95.94 gm
total= 331.154 gm per mole * 4.05 moles =
What type of covalent bond in Br₂?
O A double bond because they share 4 electrons.
O A double bond because they share 2 electrons.
OA single bond because they share 2 electrons.
OA single bond because they share 1 electron
Answers
Answer: A single bond because they share 2 electrons
Explanation:
I need assistance for number 5 and all parts of problem number five thank you !
Answers
Answer
The type of structural formula for each of the hydrocarbons given are shown below:
(a) Propyne (expanded):
(b) 2,2-dimethybutane (skeletal):
(c) Benzene (line-and-angle)
:
(d) Heptane (condensed)
CH₃CH₂CH₂CH₂CH₂CH₂CH₃
How many photons are contained in a flash of green light (525 nm) that
contains 189 kJ of total energy?
Answers
The flash of green light 525 nm that contains 189kJ of total energy is 2.39 ×10^29 photons.
The formula below gives the energy EE of a single photon of wavelength lambda.
E = hc/λ, where c is the speed of light and h is the plank constant, with a value of 6.62607015 ×10^34.
To determine the overall number of photons n in a green light flash (525 mm) with a total energy of 189 kJ.
We'll apply the following formula.
n= Et/ E
When we enter the given values into the formula, we see that n= Et/E.
= \(\frac{189 *10^3}{6.62607015 *10^−34 × 3*10^8}/ 525 *10^-3\)
Therefore, there are 2.39 ×10^29 photons in a green light with 189 kJ of energy.
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explain chlorination of methane
Answers
Answer:
Methane and chlorine
If a mixture of methane and chlorine is exposed to a flame, it explodes - producing carbon and hydrogen chloride. This is not a very useful reaction! The reaction we are going to explore is a more gentle one between methane and chlorine in the presence of ultraviolet light - typically sunlight. This is a good example of a photochemical reaction - a reaction brought about by light.
CH4+Cl2+energy→CH3Cl+HCl(3.4.2)
The organic product is chloromethane. One of the hydrogen atoms in the methane has been replaced by a chlorine atom, so this is a substitution reaction. However, the reaction doesn't stop there, and all the hydrogens in the methane can in turn be replaced by chlorine atoms.
Substitution reactions happen in which hydrogen atoms in the methane are replaced one at a time by chlorine atoms. You end up with a mixture of chloromethane, dichloromethane, trichloromethane and tetrachloromethane.
I hope this help you!:)
Explanation:
Read the quote: "No tears in the writer, no tears in the reader." Which best explains the meaning of this quote?
Answers
Answer:
From personal experience
Explanation:
If is not felt by the writer, the reader will not feel it either!
Answer:
the writers emotions about the writing will affect the way the reader feels
Explanation:
To explain the difference between elements and compounds, a teacher filled
clear boxes with balls.
Which box best represents a sample of an element?
Answers
Answer:
A
Explanation:
An element is a substance, made up of atoms of the same substance and has independent existence. An element cannot be broken up by physical or chemical processes.
If we look at the images closely, image A represents a substance made up of the same kind of atoms. All the balls are exactly of the same colour and type, hence the answer.
Which chemical equation represents a redox reaction
Answers
Answer:
The correct answer is option B, that is, CO + H2O → H2 + CO2
The redox reactions are regarded as the chemical reactions in which one reactant goes through the process of reduction and one reactant goes through the process of oxidation. The reduction reactions are the reactions in which gain of electrons occurs, while oxidation reactions are the reactions in which loss of electrons occurs.
From the mentioned options, only option B, that is, CO + H2O → H2 + CO2 is a kind of redox reaction. In this, the carbon is getting oxidized from +2 to +4 oxidation state, and hydrogen is getting reduced from +1 to 0 oxidation state. Hence, this reaction can be regarded as a redox reaction.
Explanation:
4. Long answer type questions: a. b. C. d. e. f. g. h. j. i. What are the constituent gases of air? Why is the surrounding air not seen with the eyes? How do you prove that air supports burning? How do you show that air occupies space? How do you prove that air has weight? How is air useful to us? Mention any three points. Write any three properties of air. How can you say that air exerts force? Write any four effects of air pollution. Write any three causes of air pollution and any two control measures of it.
Answers
1. The constituent gases of air are:
Nitrogen Oxygen Argon Carbon Dioxide2. The surrounding air is not seen with the eyes because it is transparent. Air molecules are not visible to the na-ked eye, and they do not scatter or absorb visible light significantly. Therefore, air appears colorless and transparent.
What is air?3. To prove that air supports burning, you can perform an experiment with a burning candle. Place a glass jar or bell jar over a lit candle, ensuring that the jar is airtight. As the candle burns, it consumes oxygen from the air inside the jar. Eventually, the candle flame will go out due to the lack of oxygen, proving that air (specifically oxygen) is necessary for burning.
4. To show that air occupies space, you can perform a simple experiment using a plastic bottle or syringe. Fill the bottle or syringe with water, ensuring there are no air bubbles. Then, cover the opening tightly and try to compress the air inside. You will find that it is not possible to compress the air significantly, indicating that air occupies space.
5. To prove that air has weight, you can use a sensitive balance or scale. Weigh an airtight container or balloon, and then fill it with air. The weight of the container or balloon with the added air will be greater than its initial weight, demonstrating that air has weight.
6. Air is useful to us in various ways. Three points highlighting the importance of air are:
Breathing and RespirationCombustion and Energy ProductionClimate Regulation7. Three properties of air include:
Air is Compressible: Air can be compressed or expanded under different conditions, allowing it to fill various spaces and containers.Air has Mass: Air molecules have mass, which means air itself has weight. It exerts pressure on objects and surfaces.Air Exerts Pressure: Due to the collisions of air molecules with surfaces, air exerts pressure in all directions. This pressure is known as atmospheric pressure.Air exerts force in various ways. For example, air pressure allows objects like airplanes to fly by providing lift. Air resistance or drag opposes the motion of objects moving through the air, creating a force that can affect their speed and trajectory.
8. Four effects of air pollution include:
Respiratory ProblemsEnvironmental Damage:Climate ChangeHuman Health Impacts9. Causes of pollution:
Industrial EmissionsVehicle EmissionsResidential and Agricultural Activities10. Two control measures for air pollution include:
Emission ReductionAir Quality RegulationsLearn more about air on https://brainly.com/question/15215203
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Consider the addition of an electron to the following atoms from the third period. Rank the atoms in order from the most negative to the least negative electron affinity values based on their electron configurations.
Atom or ion Electron configuration
Br 1s22s22p63s23p64s23d104p5
Ge 1s22s22p63s23p64s23d104p2
Kr 1s22s22p63s23p64s23d104p6
Answers
Answer:
The ranks is
Ge: 3d10 4s2 4p2 (6 electrons in the outer shell)
Br: 3d10 4s2 4p5 (7 electrons in the outer shell)
Kr: 3d10 4s2 4p6 (8 electrons in the outer shell)
Explanation:
Electronic configuration reffers to the distribution of electrons of an atom or molecule in atomic or molecular orbitals. It gives us the understanding of the shape and energy of its electrons. The electronic configuration explain the The electron affinity or propensity to attract electrons
It Should be noted that the most stable configuration in an electronic configuration is attributed to when the last shell is full, i.e. when the last shell has 8 electrons.
When an atom is closer to reach the 8 electrons in the outer shell, then it's electron affinity big.
Considering the given three configuration of the elements above, we can see that "Br"needs requires only 1 electron to have 8 electrons in the outer shell, therefore, it is considered to have the biggest electron affinity among them which is reffers to as the LEAST NEGATIVE.
Ge: with the electronic configuration 3d10 4s2 4p2 has 6 electrons in the outer shell which means it still requires 2 electrons to complete 8 electrons in its outer shell, so it can be deducted that it posses an atom that is more negative than Br.
Kr: with the electronic configuration 3d10 4s2 4p6 which is a noble gas has 8 electrons in the outer shell cannot add more electrons to its outer shell because the 8 electrons is complete posses the least electron affinity among the three elements and it is the MOST NEGATIVE
why is grass green why not pink or blue?
Answers
Answer:
There is a tint or pigment in the grass that gives it the color green called chlorophyll. That is used during the photosynthesis cycle.
Explanation:
You're welcome.
List 4 significant problems with nuclear power plants.xx
Answers
Answer:
Cost.
Weapons Proliferation Risk.
Meltdown Risk.
Mining Lung Cancer Risk.
Explanation:
Hope this helped!!!
Which of the following is an application of Newton's Third Law of Motion?
A. A skydiver falls away from a plane toward the ground.
B. A truck accelerates more slowly when it is fully loaded than when it is empty.
C. A ball sits on the ground until a player kicks it. The nonzero net force sets the ball in motion.
D. A rocket can accelerate when it pushes gas backward. The reaction force pushes the rocket forward.
Answers
Answer:
C
Explanation:
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15. Excited sodium atoms emit light in the infrared at 589 nm. What is the energy of a single photon with this wavelength?
Answers
Answer:
3.36 × 10^-19 J
Explanation:
From the formula;
E= hc/wavelength
h= 6.6 ×10^-34 Js
c= 3 × 10^8 ms-1
Wavelength= 589 ×10^-9 m
E= hc/ wavelength
E=6.6 ×10^-34 × 3 × 10^-8/ 589 ×10^-9
E= 3.36 × 10^-19 J
What is the density of nitrogen gas at 356.4 K?
Answers
Answer:
Nitrogen gas (chemical symbol N) is generally inert, nonmetallic, colorless, odorless and tasteless. Its atomic number is 7, and it has an atomic weight of 14.0067. Nitrogen has a density of 1.251 grams/liter at 0 C and a specific gravity of 0.96737, making it slightly lighter than air.
Explanation:
:)
How much heat is evolved in converting 1.00 mol of steam at 160.0 ∘C to ice at -55.0 ∘C? The heat capacity of steam is 2.01 J/(g⋅∘C) and of ice is 2.09 J/(g⋅∘C).
Answers
Answer:
the heat capacity of steam is 2.01 J/(g⋅∘C) and of ice is 2.09 J/(g⋅∘C). 1. See answer.
a substance that is found naturally in the Earth and that does not contain plant or animal matter. Gold is an example.
Answers
Answer:
COPPER , SILVER, GRAPHITE, WATER , POTASSIUM , LEAD AND .........ETC
Explanation:
Which of the following is true according the the Arrhenius theory of acids?
A strong acid increases the OH-ion concentration in an aqueous solution.
A strong acid decreases the OH-ion concentration in an aqueous solution.
O A strong acid decreases the H+ and OH-ion concentration in an aqueous
solution.
A strong acid increases the H+ ion concentration in an aqueous solution.
Answers
For example
HCl———>H+ + Cl-
What is the molar mass
MgCrO4
Answers
The molar mass of MgCrO4 is approximately 140.30 g/mol.
To determine the molar mass of MgCrO4 (magnesium chromate), we need to calculate the sum of the atomic masses of each individual element in the compound.
The chemical formula MgCrO4 indicates that the compound consists of one magnesium atom (Mg), one chromium atom (Cr), and four oxygen atoms (O).
The atomic masses of the elements can be found on the periodic table:
Magnesium (Mg) has an atomic mass of approximately 24.31 g/mol.
Chromium (Cr) has an atomic mass of around 51.99 g/mol.
Oxygen (O) has an atomic mass of about 16.00 g/mol.
Now, we can calculate the molar mass of MgCrO4 by summing up the atomic masses of each element, considering the respective subscripts:
Molar mass = (Atomic mass of Mg) + (Atomic mass of Cr) + 4 × (Atomic mass of O)
Molar mass = (24.31 g/mol) + (51.99 g/mol) + 4 × (16.00 g/mol)
Molar mass = 24.31 g/mol + 51.99 g/mol + 64.00 g/mol
Molar mass ≈ 140.30 g/mol
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1. What is the usual state of oxygen and hydrogen?
Answers
Under normal circumstances, oxygen is an inert, colorless, odorless gas that condenses into a pale blue liquid. Colorless, tasteless, odorless, and non-metallic hydrogen has the chemical formula H2.
Is hydrogen a liquid or a gas?The lightest element is hydrogen. Gas is a vapor at normal pressure and temperature, but at a temperature of -423 degrees F, it crystallizes into a liquid.
Is hydrogen fuel less expensive than regular fuel?Midsize gasoline hybrids achieve 42 mpg on average, compared to 30 mpg for gasoline vehicles. The graphic illustrates how much more fuel an FCV costs per mile than like a fuel hybrid and how much more it costs than a traditional gasoline car.
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A weather balloon near sea level (101,323 Pa, 299.19 K) has a volume of 261.17 ft3. It is launched and ascends to a height of 105,200 feet (861.62 Pa, 229.10 K) before bursting. What was its final volume, in ft3?
Answers
Answer:
2219.945
Explanation:
861.62/101.323 = 8.5
261.17 x 8.5 = 2219.945
Equal chemical equations!
H2 + Cl2 ----> HCl
P4 + O2 ----> P4O10
Na + Cl2 ----> NaCl
CH4 + O2 ----> CO2 + H2O
Answers
Answer:Na+Cl2---->NaCl
Explanation:
Answer:
I've balanced the equations.
They are in the attached image.
The values in red are the added number to make the equation balanced .
What is the relationship between the mass of the boat and the mass of the displaced
liquid?
Answers
I hope this helped!
The mass of the boat is equal to the mass of the liquid which is displaced by placing the boat in the liquid.
What is Archimedes' Principle?
Archimedes' Principle states that the buoyant force of the object is equal to the weight of the water which is displaced by the boat. If the weight of the water that is displaced by the boat is less than that of the weight of the boat, then in this case the boat sinks. Archimedes' principle or the buoyant force is very useful for the calculation of the volume of an object that does not have a regular shape.
The mass of the displaced liquid is always equal to the volume of the liquid multiplied by the density of the fluid. When a boat is placed in the water, the volume of displaced water is equal to the mass of the boat which is placed in it.
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