EASY
JEE Main
IMPORTANT
Earn 100

Find the ratio of the number of molecules contained in of and of .

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Important Questions on Elementary Problems Based on Definition of Mole: The Mole Concept
HARD
JEE Main
IMPORTANT
How many molecules of are contained in one liter of air if the volume content of is at is . Find out the value of p?

EASY
JEE Main
IMPORTANT
Is the number of molecules in of and of the same? What is the ratio of weights of and the mixture of which contains equal number of molecules of each gas?

EASY
JEE Main
IMPORTANT
The measured density at of a gaseous sample of a compound was found to be What is the weight of mole of the gaseous sample?

EASY
JEE Main
IMPORTANT
If the concentration of a solution is . Calculate the number of milli-moles present in of the solution.

EASY
JEE Main
IMPORTANT
The number of moles of oxygen are contained in one litre of air is , if its volume content is at . Find the value of .
Round off your answer to the nearest integer.

MEDIUM
JEE Main
IMPORTANT
How many atoms do mercury vapor molecules consist of if the density of mercury vapor relative to air is . The average mass of air is

MEDIUM
JEE Main
IMPORTANT
Calculate the total number of atoms in of .
Divide the final answer by .
Round off your answer to the nearest integer.

EASY
JEE Main
IMPORTANT
What is the volume of of hydrogen at and
