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34.05 ml of phosphorus vapours weigh 0.0625 g at 546 degree C and 0.1 bar pressure. What is the molar mass of phosphorus? a.124.66g/mol
b.1247.74g/mol
c.12.47 g/mol
d.30g/mol?pls explain?
Verified Answer
34.05 ml of phosphorus vapours weigh 0.0625 g at 546 degree C and 0.1 ...
Hello Student
Given,
p = 0.1 bar
V = 34.05 mL = 34.05 * 10–3 L = 34.05 * 10–3 dm3
R = 0.083 bar dm3 K–1 mol–1
T = 546^0C = (546 + 273) K = 819 K

We can calculate the number of moles (n) by using the ideal gas equation : pV = nRT.
Replacing n by m/M, where, m = mass = 0.0625g
M = Molecular mass, which we need to find.

Therefore, pV = mRT/M,
So, M = mRT/PV = (0.0625 * 0.083 * 819) / ( 0.1 * 34.05 * 10–3 )
= 1247.5 g mol–1
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34.05 ml of phosphorus vapours weigh 0.0625 g at 546 degree C and 0.1 bar pressure. What is the molar mass of phosphorus? a.124.66g/mol b.1247.74g/molc.12.47 g/mol d.30g/mol?pls explain?
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34.05 ml of phosphorus vapours weigh 0.0625 g at 546 degree C and 0.1 bar pressure. What is the molar mass of phosphorus? a.124.66g/mol b.1247.74g/molc.12.47 g/mol d.30g/mol?pls explain? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about 34.05 ml of phosphorus vapours weigh 0.0625 g at 546 degree C and 0.1 bar pressure. What is the molar mass of phosphorus? a.124.66g/mol b.1247.74g/molc.12.47 g/mol d.30g/mol?pls explain? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 34.05 ml of phosphorus vapours weigh 0.0625 g at 546 degree C and 0.1 bar pressure. What is the molar mass of phosphorus? a.124.66g/mol b.1247.74g/molc.12.47 g/mol d.30g/mol?pls explain?.
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