How much faster does 235UF. effuse than 238 UF6? | A) 1.0086/1 B) 0.9957/1 C) 1.0043/1 D) 0.9914/1 E) 1.0064/1

Answers

Answer 1

The answer is C) 1.0043/1. This means that 235UF6 effuses 1.0043 times faster than 238UF6. The rate of effusion is the measure of the speed of gas particles through a tiny hole in a container.

The rate of effusion of a gas is inversely proportional to the square root of its molar mass. Therefore, the lighter the gas, the faster it will effuse.
To answer the question, we need to compare the molar masses of 235UF6 and 238UF6. The molar mass of 235UF6 is 235 + 6(19) = 349 g/mol, while the molar mass of 238UF6 is 238 + 6(19) = 352 g/mol.
Using the formula for the rate of effusion, we can calculate the ratio of the rates of effusion between the two gases.
Rate of effusion of 235UF6 / Rate of effusion of 238UF6 = √(Molar mass of 238UF6 / Molar mass of 235UF6)
= √(352 g/mol / 349 g/mol)
= 1.0043


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Related Questions

What is the freezing point of a solution of 498mL of water (solute) dissolved in 2.50 L of ethanol (solvent), C2H5OH? The density of C2H5OH is 0.789g/cm3. (Remember that water has a density of 1.0 g/cm3.)

Answers

Answer:

Freezing T° of solution is -142.4°C

Explanation:

This excersise is about colligative properties, in this case freezing point depression,

ΔT = Kf . m . i

Where ΔT = Freezing T° of solvent - Freezing T° of solution

Kf = Cryoscopic constant

m = mol/kg (molality)

i = Number of ions dissolved.

Water is not ionic, so i = 1

Let's find out m.

We determine mass of water, by density

498ml . 1 g/mL = 498 g

We convert the mass of water to moles → 498 g . 1mol/18g = 27.6 moles

We determine mass of solvent by density

2500 mL . 0.789 g/mL = 1972.5 g

Notice, we had to convert L to mL to cancel units.

1 cm³ = 1 mL

We convert the mass from g to kg → 1972.5 g . 1kg /1000g = 1.97kg

We determine m = mol/kg → 27.6mol / 1.97kg = 13.9 m

Kf for ethanol is: 1.99 °C/m

Freezing T° for ethanol is: -114.6°C

We replace at formula: - 114.6°C - Freezing T° solution = 1.99 °C/m . 13.9 m . 1

- 114.6°C - Freezing T° solution = 27.8 °C

- Freezing T° solution  = 27.8°C + 114.6°C

Freezing T° Solution = - 142.4 °C

H3PO4 + HCI
PCI5+H2O

Answers

Answer:

Balanced Chemical Equation:

H3PO4 + 5HCl → PCl5 + 4H2O

PLEASE HELP ME !!!!

The octet rule states that atoms tend to form bonds so that each atom has eight ________ in its _______
shell

Answers

Answer:

electrons..............

Answer:

electrons, outer

Explanation:

1 pt
Vanadium (V) is element 23 on the periodic table. A sample contains 2.88x1022 atoms of V. Calculate the amount of V.
1 pt
x mol V
1 pt
Resubmit
Show Approach Hide Tutor Steps

Answers

Ghbghvdezagnlmhhbbb

Which phrases describe the oceans? Check all that apply.

cover more than 70 percent of Earth
provide oxygen for life on Earth
contain fresh water
constantly in motion
interact with other Earth systemsWhich was found to be unconstitutional based on the Supreme Court’s ruling in Scott v. Sandford?

Answers

Answer:

the first one is the answer

Answer:

Phrases that describe the oceans are

cover more than 70 percent of Earth

constantly in motion

interact with other Earth systems

Explanation:

What are the two most important properties of ocean water?

Two of the most important characteristics of ocean water are its temperature and salinity.

Find the amount of water containing 14.02 * 10²⁴ molecules​

Answers

Answer:

14.02 x 10²⁴ molecules

Explanation:

To solve this problem we will use Avogadro's number: It relates to the number of molecules (or atoms) contained in 1 mol of any given substance:

14.02 x 10²⁴ molecules ÷ 6.023 x 10²³ molecules/mol = 23.28 moles

Thus, 23.28 moles of water contain 14.02 x 10²⁴ molecules.

Why are the elements in group VIIIA unreactive?

They are all gases.

They have an even number of electrons in their outer shell.

They have a full outer shell of electrons.

They each have a stable nucleus.

Answers

Number 1/letter A is the answer to your asked question!

Why do you think males and children are more likely to die from DHMO

Answers

Answer:

Dihydrogen Monoxide (DHMO) is perhaps the single most prevalent of all chemicals that can be dangerous to human life. Despite this truth, most people are not unduly concerned about the dangers of Dihydrogen Monoxide. Governments, civic leaders, corporations, military organizations, and citizens in every walk of life seem to either be ignorant of or shrug off the truth about Dihydrogen Monoxide as not being applicable to them. In 1997, the Dihydrogen Monoxide Research Division was formed and went online spreading the truth about DIHYDROGEN MONOXIDE. As word has spread, so too has the public awareness of Dihydrogen Monoxide and its implications involving the Internet and accessibility of such information. To that end, the DMRD's web site at DHMO.org continues to provide the most comprehensive collection of Dihydrogen Monoxide information available anywhere.

Explanation:

DHMO has been the dihydrogen monoxide. It has been responsible for the death of males and children as it causes tissue damage.

The DHMO has been the hydric acid and is one of the major constituents of acid rain. Gas has been responsible for greenhouse gas. Ingestion may lead to tissue damage with symptoms of nausea, vomiting, and electrolyte imbalance.

The companies dumping waste in the rivers and lakes have been warned for the removal of DHMO as it has been harmful to the males and children, and results in death.

For more information about Dihydrogen Monoxide, refer to the link:

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What is the difference between fumarate and fumaric acid?

Answers

Answer:

the difference is fumaric acid the carboxylic acid groups are trans (E) and in maleic acid they are cis (Z)

Explanation:

and  Fumarate is an intermediate in the citric acid cycle used by cells to produce energy in the form of adenosine triphosphate (ATP) from food

The equation below represents the process that you observed. Balance the equation. What type of reaction?
6CO2 + 6H2O + light energy = 0C6H12O6 + 6O2 _______________________

Answers

Answer:

Explanation:

6CO2 + 6H2O = 0C6H12O6 + 6O2

First you note how much u got of everything in front of and behind the arrow

C   6                        C 6

O   6 + 12 = 18        O 6 + 12 = 18

H   12                       H 12

As you can see, the equation is already balanced.

This is the equation of photosynthesis, which is a chemical reaction

industrial gases cause acid rain why​

Answers

because the industrial gas is very harmful for us it is made up chemical and toxic gases

Answer:

The usual culprit is burning coal.

Explanation:

This produces a lot of carbon dioxide as well as sulphur dioxide. Other industrial processes, and vehicle emissions, produce similar oxides unless they are 'scrubbed' out. They react with atmospheric moisture to produce acids like carbonic, sulphurous and nitrous acids. Which is then precipitated. It should be remembered that a volcanic eruption has this effect too.

Mammals and plants do not belong in the same domain.

Fact:

Evidence:

Answers

False

Fact: Mammals and plants belong to the same domain, the Eukarya domain.

Evidence :All the organisms that possess a eukaryotic cell, plants, animals, protists, and fungi are in the Eukarya domain.

Which of the following is a property of a non-metal.

luster
ductile
malleable
does not conduct heat and electricity

Answers

Answer:

luster

:/:/:/:/:::/:::

20 POINTS!!
__________ aid the immune system in mounting attacks against cancer cells by targeting antigens only found on the surface of cancer cells.

A. Monoclonal antibodies
B. Interferons
C. CRISPR
D. Vaccines
E. Interleukins

Answers

Answer:

B. Interferon

Explanation:

interferon targets any lingering melanoma cells and prevents them from spreading and growing.

1s2, 2s2, 2p6, 3s2, 3p6, 4s2
How many shells does this atom have?

Answers

Answer:

4

Explanation:

El oxígeno y el azufre reaccionan con el cobre para formar óxido de cobre (CuO) y sulfuro de cobre (CuS), respectivamente. ¿Qué cantidad de azufre reacciona con el oxígeno? 1° Cu + O2 =2CuO 2° Cu + S = CuS 3° S + O2 = 2SO

Answers

Yes it need to be like that cause when it like that it like that

The given reaction is an example of displacement reaction. Here, one mole of oxygen reacts with one mole of oxygen molecules. Hence theoretically 32 g of sulphur needs 32 g of oxygen.

What is displacement reaction?

Displacement reactions are a kind of reactions where one element or group is displaced with other element or group. There are both single displacement and double displacement reaction.

The reaction of sulfur oxide with metallic copper producing copper oxide and copper sulphide is an example of single displacement reaction. The prior reaction for this is the combination of sulfur and oxygen.

Here, one mole of oxygen reacts with one mole of oxygen molecules. Hence theoretically 32 g of sulphur needs 32 g of oxygen. Thus each is reacting in 1 :1 ratio and giving the oxide of sulfur.

To find more on displacement reaction, refer here:

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The English translation of your question is as follows:

Oxygen and sulfur react with copper to form copper oxide (CuO) and copper sulfide (CuS), respectively. How much sulfur reacts with oxygen? 1° Cu + O2 =2CuO 2° Cu + S = CuS 3° S + O2 = 2SO

A quanta of electromagnetic energy is called *

Answers

Answer: A quantum of electromagnetic energy is called a photon. Also, do you mean a quantum because I don't think a quanta is a thing

Explanation:

Can someone help me with my stoichiometry homework, it is due tonight.

Answers

Answer:

1. 1 mole of NaCl.

2. 1 mole of H₂O.

Explanation:

The balanced equation for the reaction is given below:

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

1 mole of HCl reacted with 1 mole of NaOH to produce 1 mole of NaCl and 1 mole of H₂O.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above, we can see that 1 mole of HCl reacted completely with 1 mole of NaOH. Therefore, HCl is the limiting reactant and NaOH is the excess reactant since we have 3.6 moles of NaOH.

1. Determination of the amount of NaCl produced from the reaction.

NOTE: The limiting reactant is used to determine the maximum amount produced since all of it is consumed in the reaction.

The limiting reactant is HCl and the amount of NaCl produced can be obtained as follow:

From the balanced equation above, we can see that 1 mole of HCl reacted to 1 mole of NaCl.

Thus, 1 mole of NaCl was produced.

2. Determination of the amount of H₂O produced from the reaction.

From the balanced equation above, it is evident that 1 mole of HCl reacted to produce 1 mole of H₂O.

Thus, 1 mole of H₂O was produced.

What is the difference between an empirical formula and a molecular formula?

Answers

Answer:

The empirical formula simply states the ratios of the elements that make up the molecule, while molecular formulas specify the amounts of each element exactly, not just giving the ratio. Let's take ethane (C2H6) as an example.

Choose the formula for calculating percent composition.

Answers

Answer:

The equation for percent composition is (mass of element/molecular mass) x 100.

please mark me as a brainlist

PLS HELP 6TH GRADE ITS ONE QUESTION ABOUT SCIENCE

Answers

Answer: The answer is C

Explanation:

Your answer would be C. :)

biology and physics are so closely related that sometimes the fields overlap. what experiment might both biologist and physicists do

Answers

Answer:

Study how the body's nerve cells react to an electrical shock.

Explanation:

Answer:

Study how the body's nerve cells react to an electrical shock.

Explanation:

a p ec

the stimulus is related to?​

Answers

Answer:

The government :) lol

Explanation:

I need help with this question ASAP

Answers

Answer:

I think its A)

Explanation: im not sure im sorry

Which of the following may be a reason why climbing up objects would help the ivy survive?

Answers

I need the answers to help, but it will probably be something along the lines of climbing objects for sunlight.

Choose the aqueous solution below with the highest boiling point. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

Answers

The question is incomplete, the complete question is;

Choose the aqueous solution that has the highest boiling point. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable. 0.100 m C6H12O6 0.100 m AlCl3 0.100 m NaCl 0.100 m MgCl2 They all have the same boiling point.

Answer:

AlCl3 0.100 m

Explanation:

Let us remember that the boiling point elevation is given by;

ΔTb = Kb m i

Where;

ΔTb = boiling point elevation

Kb = boiling point constant

m = molality of the solution

i = Van't Hoff factor

We can see from the question that all the solutions possess the same molality, ΔTb now depends on the value of the Van't Hoff factor which in turn depends on the number of particles in solution.

AlCl3 yields four particles in solution, hence ΔTb is highest for AlCl3 . The solution having the highest value of ΔTb also has the highest boiling point.

which statement best explains why chlorine is added to drinking water? A. Chlorine cures infections caused by bacteria or other microorganisms B. Chlorine protects people teeth against cavities C. Chlorine prepares the body to fight future infections D. Chlorine kills most pathogens in water

Answers

Answer:

to protect peoples teeth against cavities

Explanation:

i just know

Answer: its D

Explanation: A.P.E.X.

Question 5
4
What type of plate boundary involves plates moving away from each other?
convergent
divergent
transform

Answers

Answer:

A divergent boundary!

Explanation:

A divergent boundary occurs when two plates move away from each other, while a convergent boundary is when two plated collide. And a transform plate boundary is when two plates horizontally slide against each other.

I hope this helps! ^^

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Answer:

The answer is Divergent boundaries

The name for a mixture in which all samples are made up of the same
proportions of matter is:

Answers

Answer: homogeneous mixture

Explanation:

3 By referring to subatomic particles, explain why
an atom of
nitrogen is electrically neutral.

Answers

Answer:

Explained below

Explanation:

Atoms are said to be electrically neutral when they have the same number of protons and electrons.

Now, Nitrogen atom has a mass number of 14 and an atomic number of 7. This means that it has 7 number of protons and 7 number of electrons.

From the definition of electrically neutral atoms, it's clear that nitrogen falls into that category.

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