![pcruznoel6624](/avatars/4401.jpg)
pcruznoel6624
17.10.2020 •
Chemistry
a 108ml sampl of gas has a mass of 77.96mg at a pressure of 1140mmhg and temperature of 183°c .what is the molar mass of the gas ?
Solved
Show answers
More tips
- A Animals and plants How to Properly Care for Orchids: Secrets to Successful Cultivation...
- W Work and Career Which types of activities are not subject to mandatory licensing?...
- C Computers and Internet Thin Client: What It Is and Why You Need It?...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Chemistry
- C Chemistry Hey guys new on follow me i ll follow you back...
- C Chemistry Matter is anything that a. has only one physical state. b. has mass and takes up space. c. contains two elements combined chemically. d. is important to human society....
- C Chemistry I need the answer to this asap!! please explain...
- C Chemistry Write a balanced symbol equation for the incomplete combustion of hexane (C6H14) to produce soot....
- C Chemistry Which of these shows unbalanced forces at work on an object? A. an ice skater turning as he skates around an ice rink B. a water skier pulled by a boat at a constant 30 mph...
- C Chemistry deduce the formula of the ion that has a charge of 2+ with the same electron configuration as krypton....
- M Mathematics what is 7/5 as a decimal number...
- S Social Studies our many jewish friends and acquaintances are being taken away in droves. the gestapo is treating them very roughly and transporting them in cattle cars to westerbork, the...
- H History Which of the following was a result of the french and indian war? canadian independence decreased trade between britain and the colonies increased british debt the first...
- E English The realistic novel is most concerned about character plot symmetry logic...
Ответ:
Molar mass = 20 g/mol
Explanation:
Given data:
Volume of gas = 108 mL
Mass of gas = 77.96 mg (77.96/1000 = 0.08 g)
Pressure of gas = 1140 mmHg
Temperature of gas = 183°C
Molar mass of gas = ?
Solution:
First of all we will calculate the number of moles of gas.
PV = nRT
R = general gas constant = 0.0821 atm.L/ mol.K
Now we will convert the units and then we will put the values in formula.
Volume of gas = 108 mL× 1 L/1000 mL= 0.108 L
Pressure of gas = 1140 mmHg× 1 atm / 760 mmHg = 1.5 atm
Temperature of gas = 183+273 = 456 K
PV = nRT
1.5 atm ×0.108 L = n × 0.0821 atm.L/ mol.K ×456 K
0.162 atm.L = n ×37.44 atm.L/ mol
n = 0.162 atm.L/37.44 atm.L/ mol
n = 0.004 mol
Molar mass of gas:
Number of moles = mass/molar mass
0.004 mol = 0.08 g / molar mass
Molar mass = 0.08 g /0.004 mol
Molar mass = 20 g/mol
Ответ: