Advertisements
Advertisements
Question
How many atoms are there in 0.25 mole of hydrogen ?
Advertisements
Solution
0.25 moles of hydrogen
Number of hydrogen atoms in 1 mole = 6.022 × 1023
Therefore, number of atoms in 0.25 moles = 6.022 × 1023 × 0.25 = 1.50 × 1023 atoms
Hence, number of hydrogen atoms in 0.25 moles is 1.50 × 1023
APPEARS IN
RELATED QUESTIONS
Calculate the molar mass of the following substance:
Ethyne, C2H2
Convert into mole.
12 g of oxygen gas
Fill in the following blanks :
64 g of oxygen gas contains ................ moles of oxygen atoms.
Define mole. What are the two things that a mole represents.
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Sodium chloride
Two oxides of a metal (M) have 20.12% and 11.19% oxygen. The formula of the first oxide is MO. Determine the formula of the second oxide.
How many grams of HCl are present in 0.1 mole of it?
Calculate the number of moles of CO2 which contain 8.00 g of O2
The molecular formula for elemental sulphur is S8.In a sample of 5.12 g of sulphur:
How many molecules and atoms are present?
What is Molar volume of a gas?
