1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
taurus [48]
2 years ago
15

A sample of gaseous arsine (AsH3) in a 460 mL flask at 332 Torr and 223 K, is heated to 437 K, at which temperature arsine decom

- poses to solid arsenic and hydrogen gas. The flask is then cooled to 273 K, at which tem- perature the pressure in the flask is 488 Torr. What percentage of arsine molecules have de- composed?
Answer in units of %.
Chemistry
1 answer:
Taya2010 [7]2 years ago
4 0

Answer:

28/95 = 29.,5 % of Arsine decomposed

Explanation:A sample of gaseous arsine (AsH3) in a 460 mL flask at 332 Torr and 223 K, is heated to 437 K, at which temperature arsine decom- poses to solid arsenic and hydrogen gas. The flask is then cooled to 273 K, at which tem- perature the pressure in the flask is 488 Torr. What percentage of arsine molecules have de- composed?

Answer in units of %.

initial pressure 332 Torr initial volume 0.46 L initial temperature 223K

final pressure 488 Torr final volume 0.46 L final 273 K

Torr is 1/760 atm 332 torr = 0.437 atm 488 Torr =0.642 atm

PV = nRT so n=RT/PV

INITIAL n= 0.082 X 223/(0.437)(0.46) = 91 moles

final n= 0.082 X 273 / (.437)(488) = 105 moles

2AsH3----------> 2As + 3H2

x moles of Arsine decomposed to make 1.5 moles of H2

the final number of moles was

(91 -X)+ 1.5 X = 105 moles

91 + 0.5 X = 105

0.5 X = 14

X =28

CHECK

if 28 moles of Arsine , then the container would have

91 --28 + 1.5(28) = 91 +14 =105 check

so 28/95 = 29.,5 % of Arsine decomposed

Your answer

(quit)

polyalchemVirtuoso

Answer:

Explanation:

ADD YOUR ANSWER

Ask maryhobbs about this question...

New questions in Chemistry

in what area of the united states do the fewest people live​

Read each step. Then put the steps in order from first to last. Write 1 for the first step, 2 for the second step and so on. 1. Fossils fuels are burn…

When unbalanced forces act on an object that is in motion, the object can: A. change speed, direction, or both. B. only change direction. C. only s…

What is the missing letter in H,J,K,L,M,N,O,P.? And what is the opposite of HATE.? And what is the opposite of ME.? Think about it -,-​

what type of reaction is Fe(NO3)3 + 3LiOH = Fe(OH)3 + 3LiNO3

Please answer this quickly. the answers that you find online are not correct. I will mark brainliest if you get it right. NO SPAM!!!!For the reaction …

cuantos gramos de soluto son necesario para preparar 50 ml de Ca(NO3)2 al 4% (w/v)

Calculate the moles of O in 0.182 mole C6H14O. Calculate the number of H atoms in 0.182 mole C6H14O. Calculate the number of C atoms in 0.182 mole C…

When a sulfur atom and an oxygen atom bond to produce substance C, electrons are? a. delocalised b. shared c. transferred​

What is oxidation state?​

LOAD MORE

Previous

Next

Ask

You might be interested in
What is the effect on pollution when cool air becomes trapped under warm air?
sergejj [24]
More pollutants accumulate
3 0
3 years ago
Read 2 more answers
A compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen (by mass). calculate the empirical formula.
Eva8 [605]
C:H:O = 40/12 : 6,7/1 : 53,3/16 = 3,33 : 6,7 : 3,33 ≈ 1 : 2 : 1

CH₂O
3 0
3 years ago
Using water to measure the volume of small irregular shaped objects is called? *
Fed [463]

Answer:

B. water displacement is used "graduated cylinder is filled with water (100 mL) and the object is then put inside. ... If the new water level is (120 mL) we now know that the object has a volume of 20 mL."

Explanation:

4 0
2 years ago
Read 2 more answers
What did Josef Loschmidt and Amedeo Avogadro Contribute to our understanding of basic molecular numbers, sizes, and reaction rat
mario62 [17]

From Avogadro we obtained a physical constant of matter which is Avogadro's number, and from both scientists we understand that elementary gases such as hydrogen, nitrogen, and oxygen were composed of two atoms.

<h3>What is Avogadro's number?</h3>

Avogadro's number, or Avogadro's constant, is the number of particles found in one mole of a substance.

The Avogadro's number is given as 6.02 x 10²³.

Summary of Josef Loschmidt and Amedeo Avogadro Contribution to chemistry.

  • Equal volumes of gas contain equal numbers of molecules,
  • Elementary gases such as hydrogen, nitrogen, and oxygen were composed of two atoms.

Thus, from Avogadro we obtained a physical constant of matter which is Avogadro's number, and from both scientists we understand that elementary gases such as hydrogen, nitrogen, and oxygen were composed of two atoms.

Learn more about Avogadro's here: brainly.com/question/1581342

#SPJ1

4 0
2 years ago
What is the majority of 0.50 g of na dissolved in a 1.5 L solution
Oxana [17]

The correct answer is 0.014467 M.  

Molarity is defined as the number of moles present in a liter solution, that is, number of moles / liter solution.  

The molar mass of sodium (Na) is 23.0 g/mol

Thus, 1 mole of Na contains 23.0 g

Now, x moles of Na contains 0.50 g

Moles = 0.50 × 1 / 23.0

Moles = 0.50 / 23.0  

= 0.0217 moles of Na

Molarity = Number of moles / liters of solution

= 0.0217 / 1.5

= 0.014467 M


8 0
3 years ago
Other questions:
  • How many moles of Al2O3 will be formed when 27 grams of Al reacts completely with O2?
    8·1 answer
  • Give an example of how environmental science might involve geology and chemistry.
    8·1 answer
  • What is the equilibrium constant for the following reaction? <br> 3A + 2B &lt;---&gt; 2C
    9·2 answers
  • A solution containing 75.0 mL of 0.150 M strong acid (HCl) is titrated with 75.0 mL of 0.300 M strong base (NaOH). What is the p
    12·1 answer
  • List common properties of bonds
    6·1 answer
  • What volume of 10,0 M H2SO4 is required to prepare 4.0 L of 0.50 M H2SO4?
    10·1 answer
  • Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
    7·1 answer
  • What is energy conversion​
    14·1 answer
  • 12. How many moles of atoms are present in 154 g of Na2O?
    5·1 answer
  • If I have 2.4g of magnesium, how many g of oxygen(O2 ) will I need to react completely with the magnesium? 2Mg +O2 → MgO
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!