Calculate the surface area of one molecue if we assume the molecule is shaped like a cylinder that the hight is 10x larger than the radius.
Answers
The surface area of one molecule shaped like a cylinder whose height is 10 times larger than its radius is 69.08r².
The molecule is shaped like a cylinder and its height is 10 times larger than its radius.
Let's assume that the radius of the cylinder be r. Hence, the height of the cylinder will be 10r.
Therefore, the surface area of the cylinder can be determined using the formula `
Surface area = 2πrh + 2πr²`.Where r = radiush = heightπ = 3.14
∴ Surface area = 2πrh + 2πr²= 2 × 3.14 × r × 10r + 2 × 3.14 × r²= 62.8r² + 6.28r²= 69.08r²
Therefore, the surface area of one molecule shaped like a cylinder whose height is 10 times larger than its radius is 69.08r².
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Related Questions
sulfur trioxide decomposes to form sulfur dioxide and oxygen, like this:(g)(g)(g)write the pressure equilibrium constant expression for this reacti
Answers
The pressure equilibrium constant expression for the decomposition reaction of sulfur trioxide (SO3) to form sulfur dioxide (SO2) and oxygen (O2) can be written as follows: Kp = (pSO2 * pO2) / pSO3
In this equation, pSO2 represents the partial pressure of sulfur dioxide, pO2 represents the partial pressure of oxygen, and pSO3 represents the partial pressure of sulfur trioxide. The pressure equilibrium constant, Kp, is a ratio of the partial pressures of the products (SO2 and O2) to the partial pressure of the reactant (SO3) at equilibrium. It provides information about the position of the equilibrium and the relative amounts of the substances involved.
To determine the value of Kp, you would need to measure the partial pressures of sulfur dioxide, oxygen, and sulfur trioxide at equilibrium. Then, you can substitute these values into the equation to calculate the Kp value. It's important to note that the Kp value for a reaction depends on the temperature at which the reaction occurs.
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If you were to reach the location in 316 minutes, what is your average speed in
Kilometers per hour? It would take us 5 hours and 2 minutes to get there at the speed of
8.3 kilometers per hour.
What is your average speed if your frame of reference is the rotation of the Earth.
Explain how you came to this conclusion.
Answers
The average speed is zero if our frame of reference is the rotation of the Earth because the relative distance with respect to the earth is zero.
Average speed = 0.26 km/hr
total time = 316 minutes
distance = speed * time
= 8.3 * 5*1/30 = 8.3 *1/6
= 1.38 km
Average speed = total distance / total time
1.38 km / 5.27
= 0.26 km/hr
Distance is described to be the importance or length of displacement among positions. observe that the gap between two positions is not the same as the distance traveled between them. Distance traveled is the whole period of the path traveled among positions. Distance traveled isn't a vector.
There are three foremost styles of average: imply, median, and mode. each of these strategies works barely otherwise and frequently results in slightly distinct ordinary values. The suggest is the maximum usually used commonly. To get the mean cost, you add up all of the values and divide this general by means of the variety of values.
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If 750 mL of 0.50 mol/L sodium chloride solution is uncovered on a windowsill and 150 mL of the solvent evaporates, what will the new concentration of the sodium chloride solution be?
Answers
A way of solving this question is using the molarity formula and finding the number of moles present in the solution, the molarity formula is:
M = n/V
where:
M = molar concentration in mol/L
n = number of moles
V = volume in liters
Now let's add the values to the formula
0.50 = n/0.750 L
n = 0.375 moles
Now let's use the molarity formula again, but with the new volume (750 mL - 150 mL = 600 mL)
M = 0.375/0.600
M = 0.625 mol/L, this is the new concentration of NaCl
Describe the particles of a solid, liquid, and gas. For each, be sure to tell how far apart they are and how fast or slowly they move.
Answers
Answer:
Solid
A solid is a state of matter where the particles are tightly packed together, they are very close togetherThey vibrate, they move very slowlyLiquid
A liquid has free-flowing particles, but they may not leave the containerThey move at medium speedGas
A gas moves very freely, they leave the container, and they may not be captured in its entiretyIt moves very fast because it is heatedHope this helps :)
- jp524
If predators A and B prey upon the same species and predator A is eliminated, the population of predator B will likely __________. a. be eliminated b. increase c. decrease d. remain the same Please select the best answer from the choices provided A B C D
Answers
Answer: B. Increase because there will be more resources for the remaining predators
Answer: B
Explanation: YES
In a drug company, all batches of a drug undergo a quality control test when manufactured.
2% of the batches are found to have a small but lethal chemical defect. 90% of tests for the defect detect the defect (true positives). 9.6% of the tests are false positives.
If a test yields a positive defect result, what are the odds the batch actually has the chemical defect?
a. 16%
b. 9.5%
c. 95%
d. 8.65%
Answers
The probability that the batch actually has a chemical defect is 16%. Therefore, option (a) 16% is the correct answer.
To solve this problem, we can use Bayes' theorem. Let's denote the following events:
A: The batch has a chemical defect.
B: The test result is positive for the defect.
We want to find the probability of event A given event B, denoted as P(A|B).
According to the problem statement, we have the following probabilities:
P(A) = 0.02 (2% of the batches have the defect)
P(B|A) = 0.9 (90% of the tests detect the defect, true positive rate)
P(not A) = 1 - P(A) = 0.98 (98% of the batches do not have the defect)
P(B|not A) = 0.096 (9.6% of the tests are false positives, false positive rate)
Now, let's calculate P(A|B) using Bayes' theorem:
P(A|B) = (P(B|A) * P(A)) / (P(B|A) * P(A) + P(B|not A) * P(not A))
P(A|B) = (0.9 * 0.02) / (0.9 * 0.02 + 0.096 * 0.98)
= 0.018 / (0.018 + 0.09408)
≈ 0.018 / 0.11208
≈ 0.1606
Therefore, the odds that the batch actually has the chemical defect, given a positive defect result, is approximately 16.06%. Rounding this to the nearest percent, we get the option (a) 16%.
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do number 10 pls 7ty grade science
Answers
The dependent variable is the time taken, the independent variable is the type of paper helicopter and the control is the height from which the paper helicopters are dropped.
What is an experiment?The term experiment helps us to decode the relationship between two variables. We have to know that in an experiment we are able to establish cause and effect relationships.
The dependent variable is the variable that is changed owing to the fact that another variable (the independent variable) is manipulated in the experiment.
Now, the dependent variable is the time taken, the independent variable is the type of paper helicopter and the control is the height from which the paper helicopters are dropped.
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how many barr bodies are found in a normal human female nucleus
Answers
Answer:
One Barr body
Explanation:
(PLEASE HELP) which two statements correctly describe forces? A.forces organize matter into patterns B.all fundamental forces are noncontact forces C.all forces act at a distance D.forces are always unbalanced
Answers
Answer:
Forces organize matter into patterns. all fundamental forces are noncontract forces
Explanation:
Forces organize matter into patterns and all fundamental forces are noncontract forces. Hence, options A and B are correct.
What is force?The push or pull on an object with mass causes it to change its velocity.
Inertia is the force that holds the universe together.
A contact force is a force which acts on an object coming physically in contact with it.
All four known fundamental interactions are non-contact forces: Gravity is the force of attraction that exists among all bodies that have mass.
Hence, options A and B are correct.
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what gas reacts with fossil fuels when burned for energy? A. oxygen b. natural gas
c. hydrocarbon d. carbon dioxide
Answers
When fossil fuels are mined and used for energy, carbon dioxide gas combines with them to form an essential heat-trapping gas known as a greenhouse gas.
The correct answer is D
Are people harmed by carbon dioxide?Many health impacts from CO2 exposure may occur. These symptoms could include a coma, hypoxia, convulsions, sweating, disorientation, agitation, a tingling or pins-and-needles sensation, difficulty breathing, fatigue, increased heart rate, and high blood pressure.
What is the principal function of carbon dioxide?As a significant greenhouse gas, carbon dioxide aids in keeping heat in the atmosphere. Our earth would be icy and inhospitable without it. But as CO2 levels grow in the atmosphere, average global temperatures rise as well, affecting other facets of Earth's climate.
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Iron reacts with water in a single
replacement reaction.
Which reaction shows the correctly
balanced equation?
A. Fe + 2H₂O →2FeO + H₂
B. 2Fe + H₂O →2FeO + H₂
C. Fe + H₂O →2FeO + H₂
D. Fe + H₂O → FeO + H₂
Answers
Answer: B.
Explanation: The correct balanced equation for the reaction of iron with water in a single replacement reaction is:
B. 2Fe + 2H₂O → 2FeO + H₂
Explanation:
In a single replacement reaction, one element replaces another in a compound. In this case, iron (Fe) is replacing hydrogen (H) in water (H₂O). The products of the reaction are iron oxide (FeO) and hydrogen gas (H₂).
To balance the equation, we need to make sure that the same number of atoms of each element are present on both the reactant and product sides.
In option A, the equation is not balanced because there are two oxygen atoms on the reactant side and only one on the product side.
In option B, the equation is correctly balanced with two iron atoms, four hydrogen atoms, and two oxygen atoms on both sides of the equation.
In option C, the equation is not balanced because there is only one water molecule on the reactant side, while there are two iron oxide molecules and one hydrogen molecule on the product side.
In option D, the equation is not balanced because there are two hydrogen atoms on the reactant side and only one on the product side.
Answer:D. Fe + H₂O → FeO + H₂
Explanation:
write a balanced chemical equation for the synthesis reaction of cl2(g) with each of the following. (a) Zn(s) (b) Ga(s) (c) Rb(s) (d) Mg(s) IS DO
Answers
(a) The balanced chemical equation for the synthesis reaction of Cl2(g) with Zn(s) is:
Zn(s) + Cl2(g) -> ZnCl2(s)
The molecular formula for zinc is Zn, and the molecular formula for chlorine is Cl2. In the balanced equation, the subscript 2 in Cl2 indicates that there are two chlorine atoms bonded together as a diatomic molecule. When zinc reacts with chlorine gas, it forms zinc chloride (ZnCl2), where one zinc atom combines with two chlorine atoms to create a stable compound.
(b) The balanced chemical equation for the synthesis reaction of Cl2(g) with Ga(s) is:
2 Ga(s) + 3 Cl2(g) -> 2 GaCl3(s)
The molecular formula for gallium is Ga, and the molecular formula for chlorine is Cl2. In the balanced equation, the coefficient 2 in front of Ga indicates that two gallium atoms react with three molecules of chlorine gas (Cl2). This reaction produces two molecules of gallium trichloride (GaCl3), where each gallium atom combines with three chlorine atoms.
(c) The balanced chemical equation for the synthesis reaction of Cl2(g) with Rb(s) is:
2 Rb(s) + Cl2(g) -> 2 RbCl(s)
The molecular formula for rubidium is Rb, and the molecular formula for chlorine is Cl2. In the balanced equation, the coefficient 2 in front of Rb indicates that two rubidium atoms react with one molecule of chlorine gas (Cl2). This reaction forms two molecules of rubidium chloride (RbCl), where each rubidium atom combines with one chlorine atom.
(d) The balanced chemical equation for the synthesis reaction of Cl2(g) with Mg(s) is:
Mg(s) + Cl2(g) -> MgCl2(s)
The molecular formula for magnesium is Mg, and the molecular formula for chlorine is Cl2. In the balanced equation, there are no coefficients written explicitly in front of Mg and Cl2. This indicates that one magnesium atom reacts with one molecule of chlorine gas to form one molecule of magnesium chloride (MgCl2), where the magnesium atom combines with two chlorine atoms.
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TRUE or FALSE the term “anti-inflammatory” likely means “against inflammation”
Answers
Answer:
True
ANTI MEANS AGAINST
Explanation:
Which element has 3 valence electrons and 3 energy levels?
Answers
Answer:
aluminum has 3 energy levels and 3 valance electrons
10. Which best describes the purpose of food?
A
to kill bacteria
s. to prevent disease
c. to eliminate waste materials
o. to provide fuel for cell processes
Answers
Answer:
10. Which best describes the purpose of food? to kill bacteria
. to prevent disease
PLEASE HELP ---- S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O
In the above equation how many moles of water can be made when 85 moles of HNO3 are consumed?
Answers
2moles of H2O are made when 6moles of HNO3 are consumed
75 mole of HNO3 produces = \(\frac{2}{6}\)× 75 ⇒ 25 moles of water
Limiting Reagent Method
The limiting reagent is the reactant that is completely used up in a reaction and thus determines when the reaction stops.
S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O
6 mole of HNO3 produces \(\frac{2}{6}\) = 2 moles of H₂O
1 mole of HNO3 produces = mole of H₂O
∴ 75 mole of HNO3 produces = \(\frac{2}{6}\) × 75 ⇒ 25 moles of water
What do the elements Ni, and Tc have in common?
Answers
Answer:
I know that
Explanation:
nickel is like to and tc is like nickel they both have something
draw the newman projection of the highest energy conformation that results from rotation about the c2-c3 bond of 2,2-dimehtylbutane
Answers
Newman projection is a technique to represent a three-dimensional molecule on a two-dimensional plane by looking directly at one of the carbon-carbon bonds.
It is also known as a bond-line formula or skeletal structure.
Explanation:
The Newman projection shows the carbon-carbon bond from the end-on perspective.
The front carbon atom is shown as a dot and the rear carbon atom as a circle.
The dots and circles represent the carbon atoms' nuclei, and the lines represent the sigma bonds.
To draw the Newman projection of the highest energy conformation that results from rotation about the C₂-C₃ bond of 2,2-dimethylbutane, follow the steps below:
Step 1: Draw the skeletal structure of 2,2-dimethylbutane.
The skeletal structure of 2,2-dimethylbutane has four carbon atoms with the following arrangement:
CH₃-CH-C(CH₃)₂-CH₃| |
Step 2: Rotate the C2-C3 bond 60 degrees clockwise and draw the Newman projection.
This conformation is known as the staggered conformation, and it has the lowest energy because the methyl groups are as far apart as possible.
Step 3: Rotate the C₂-C₃ bond 60 degrees counterclockwise and draw the Newman projection.
This conformation is known as the eclipsed conformation, and it has the highest energy because the methyl groups are as close together as possible.
Step 4: The highest energy conformation of 2,2-dimethylbutane is the eclipsed conformation, which is the conformation with the two methyl groups closest to each other.
This conformation is the least stable because it has the highest energy.
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what fraction of the neutron's kinetic energy is transferred to the carbon nucleus? (the mass of the carbon nucleus is about 12.0 times the mass of the neutron.) incorrect: your answer is incorrect.
Answers
The fraction of the neutron's kinetic energy that is transferred to the carbon nucleus in a collision can be calculated using the law of conservation of energy and the law of conservation of momentum. The two laws state that the total energy and momentum of a system are conserved before and after a collision.
In a collision between a neutron and a carbon nucleus, the kinetic energy of the neutron is converted into kinetic energy of the carbon nucleus and potential energy, which is stored in the new bonds formed between the neutron and the nucleus.
The fraction of the neutron's kinetic energy that is transferred to the carbon nucleus can be calculated as follows:
KE_carbon = (m_carbon / (m_carbon + m_neutron)) * KE_neutron
where m_carbon is the mass of the carbon nucleus (12.0 times the mass of the neutron), m_neutron is the mass of the neutron, and KE_neutron is the initial kinetic energy of the neutron. KE_carbon is the kinetic energy of the carbon nucleus after the collision.
The fraction of the neutron's kinetic energy transferred to the carbon nucleus can be calculated as KE_carbon / KE_neutron.
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Every atom of silver is identical to every other atom of silver
Answers
Answer:
Chemical reactions occur when atoms are separated from each other, joined, or rearranged in a different combination. Atoms of one element, however are never changed into atoms of another element as a result of a chemical reaction.
Explanation:
Practice 1: Choose the statement that best reflects curiosity.
A) It is important to always ask questions and want to find answers not just in science but in all activities.
B) Curiosity is not important to science, only facts.
C) It is important to learn as much about a topic before conducting an experiment.
D) Curiosity is based on knowledge. Only scientists have curiosity.
Answers
Answer:
The correct answer is - option A. It is important to always ask questions and want to find answers not just in science but in all activities.
Explanation:
Curiosity is the desire to learn about things and natural phenomenon that what is the reason behind the particular reaction or particular phenomenon and any type of knowledge to understand things better.
It is an ability that is not confined to the scientific community only but found in most of the humans and in all the activities. It helps in understanding the world and things better.
Thus, the correct answer is - option A.
Determine the number of valence electrons in each of the following elements.
Note: When electrons are added to the outermost d shell of a transition metal, sometimes the first electrons that go into the shell tend to act like normal valence electrons. This is not always the case, however. For the purpose of this problem, count the outermost d electrons as among the valence electrons (even though they are not in an outermost d principal energy level)
-Ba
-Cs
-Ni
-P
B)
Arrange the following elements in order of decreasing metallic character.
Rank elements from most metallic to least metallic. To rank items as equivalent, overlap them.
- Ra, Ba, Sb, Cd, As, Cl
Answers
Ra is the most metallic element, followed by Barium, Antimony, Cadmium, Arsenic, and Chlorine. Ra has a relatively high electronegativity, making it an excellent conductor of electricity and heat.
It is also a very reactive element, which allows it to form strong bonds with other elements. Barium is also an excellent conductor of electricity and heat and has a slightly lower electronegativity than Ra, which makes it more reactive. Antimony is slightly less metallic than Barium, and has an even lower electronegativity. Cadmium has a slightly lower electronegativity than Antimony, making it slightly less metallic.
Arsenic has a lower electronegativity than Cadmium, making it even less metallic. Finally, Chlorine has the lowest electronegativity of the group, making it the least metallic element. All of these elements are still considered to be metals, but their metallic character decreases in the order listed.
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what is the molecular formula (hill method) of phosphoric acid? use the appropriate capitalization of your atomic symbols.
Answers
H3PO4 is the molecular formula (hill method) of phosphoric acid.
Phosphoric acid, also known as orthophosphoric acid, monophosphoric acid, or phosphoric(V) acid, is an inorganic solid with the chemical formula H3PO4 that contains phosphorus. It is frequently found as an 85% aqueous solution, which is a syrupy liquid that is colorless, odorless, and non-volatile. It is a significant industrial chemical that is used in numerous fertilizers.
This substance is an acid. The phosphate ion PO3^4- is produced when all three H+ ions are removed. Dihydrogen phosphate ion H2PO 4 and hydrogen phosphate ion HPO2^4- are produced, respectively, by removing one or two protons. Organophosphates are esters created by phosphoric acid.
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Where and how does most heat loss occur in a thermos bottle? _________
Answers
Answer:
neck
Explanation:
through the neck and opening of the thermos, where there is no vacuum.. hence heat is easily transmitted resulting into heat loss
what is math and science?
Answers
Mathematics and science are formal and exact sciences that are based on logic.
What is math and science?Mathematics is an exact science that studies the properties and relationships between entities through geometric figures and arithmetic with numbers. Mathematics then looks for common patterns that could end up leading to a theory and, if it is verifiable and true, end up being a law, such as the Pythagorean law for example.
In terms of science, it is the comparable knowledge that has been studied, explained, and has helped predict social and natural phenomena in our universe over time. This has been done and verified through the scientific method, making it then a verifiable and true logic.
Therefore, we can confirm that mathematics and science are formal and exact sciences that are based on logic.
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How could you test whether or not a substance is a fluid?
Answers
if a person’s stroke volume was 70ml, and the end diastolic volume is increased from 135ml to 165ml, without any changes in arterial pressure. what is the stroke volume in the next few cardiac cycles?
Answers
The stroke volume in the next few cardiac cycles will be 100 ml if the end-diastolic volume is increased from 135ml to 165m.
The formula for stroke volume is given as;
SV = EDV - ESV
Here SV represents stroke volume, EDV represents end-diastolic volume and ESV represents end-systolic volume.
First, we calculate this person's end-systolic volume as follows;
If the person’s stroke volume was 70ml and his initial diastolic volume was 135 ml, then:
70 = 135 - ESV
70 - 135 = -ESV
-65 = -ESV
ESV = 65ml
Now the stroke volume in the next few cycles if the end-diastolic volume increase to 165 ml can be calculated as follows;
SV = 165 - 65
SV = 100ml
Therefore, the stroke volume in the next few cardiac cycles is calculated to be 100ml.
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what is the pOH of a solution with [H3O+] = 8.2 x 10-5M?
Answers
Answer:The pOH of the solution is 9.914
Explanation:
pH is given as the negative logarithm (base 10) of the hydronium ion concentration [H₃O⁺] that is
pH= - log [H₃O⁺]
Since we are given [H₃O⁺]=8.2 x 10⁻⁵,
pH=- log (8.2 x 10⁻⁵)
pH= 4.086
The pOH gives s the measurement of the concentration of OH− ions, Hence,
pH + pOH= 14
from the above calculation, we got pH=4.086
So
4.086 + pOH=14
pOH= 14 - 4.086
pOH= 9.914
The pOH of the solution is 9.914
The reactants in a chemical reaction are shown below.
Li₂CO3 + H2SO4
Answers
Answer:
Li2SO4+H2CO3
Explanation:
put d equation this way
negative ions to positive ions
How many joules of heat is needed when 5 g of water is heated from 25°C to 75°C?
Answers
Answer:
1045 J
Explanation:
By using the formula Eh= mass×specific heat capacity × change in tempreture
With it being a known fact that the specific heat capacity of water is 4.16g/j/°c