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
Gennadij [26K]
3 years ago
5

A 200.0mL flask of unknown gas was placed in a hot water bath. The temperature of the bath was found to be 99 degrees C. The pre

ssure of the flask was 733mmHg. The flask with the unknown gas in it had a mass of 126.593g. The same flask weighed 125.623g when it was empty. Determine the mass f the unknown gas in the flask. Determine the Molar Mass of an unknown gas. (Assume that the Ideal Gas Law is obeyed and use R= 0.0821 L atm/mol K SHOW ALL WORK.)
Chemistry
1 answer:
masya89 [10]3 years ago
8 0
A. Mass of the unknown gas.

The mass of the unknown gas is calculated by subtracting the weight of the empty flask from the mass when there was air in it.

      m = 126.593 g - 125.623 g

Simplifying,
     m = 0.97 grams

b. Molar mass of the gas
The molar mass of the gas is calculated by the ideal gas law.

                PV = (m/M)RT

where P is pressure,V is volume, m is the mass, M is the molar mass, R is the universal gas constant, and T is temperature. Substituting the known values to the equation,

     (733 mmHg/760 mmHg/atm)(0.20 L) = (0.97 g/M)(0.0821 L.atm/molK)(99 + 273.15 K)

The value of M in the equation is 153.64 g/mol.

<em>Answer: 153.64 g/mol</em>

You might be interested in
Bismuth has a density of 9.80 g/cm^3. What is the mass of 3.02 cm^3 bismuth?
matrenka [14]

IdkAnswer:

Explanation: idk am sorry

7 0
3 years ago
Read 2 more answers
What is the gram formula mass of Li 2 SO 4 ? Li2 + S + O4 = 13.88 + 32.06 + 63.996 = 109.94 molar mass of Li2SO4
g100num [7]
The answer would be B
7 0
3 years ago
Which of the following affects the rate of a chemical reaction?
butalik [34]
D. A ll of the above. catalyst reduces the activation energy thereby making the reaction faster. an increase in temperature  increases the kinetic energy and no of collisions making reaction faster for an endothermic reaction while decrease in temperature favors an exothermic reaction.
increase in concentration increases the molecules reacting so the reaction is faster and vice versa.
6 0
3 years ago
Read 2 more answers
When given any reaction how do I figure out the products and then balance it?
Tju [1.3M]
AB(aq)+C  >A +CB(aq)
hope this helps
5 0
3 years ago
what would be the ph of an aqueous solution of sulphuric acid which is 5×10^_5 mol l^_1 in concentration​
guajiro [1.7K]

Answer:

the ph of an aqueous solution of sulphuric acid which is 5*10^5 mol in concentration is basic in nature

6 0
3 years ago
Other questions:
  • What is a main difference between a mixture and a pure substance?
    7·2 answers
  • What is the mass percent concentration of a saline solution prepared by dissolving 1.00 mol of Na2SO4 in 1.00 L of water?
    6·1 answer
  • What elements are found in ammonia
    13·2 answers
  • If a gas occupies 3.06 liters at 760 mm Hg, what will be the volume at a pressure of 1900 mm Hg?
    11·1 answer
  • Question 4 (1 point)
    8·2 answers
  • Definition of deposition in science​
    8·2 answers
  • It is expected that the percent error for carbon will be much greater that germanium. Explain why this makes sense using the ele
    15·1 answer
  • Relationship between boiling temperature and vapour pressure
    9·1 answer
  • Describe one way that carbon can be stored for a short time in the natural cycle.
    5·1 answer
  • Please help me i need this asp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!