Advertisements
Advertisements
Question
Calculate the number of atoms in the following:
52 g of He
Advertisements
Solution
4 g of He has atoms = 6.02 x 1023
∴ 52 g of He has atoms = `(6.02 xx 10^23 xx 52)/4`
= 78.26 x 1023
= 7.82 x 1024
APPEARS IN
RELATED QUESTIONS
Calculate the molar mass of the following substance:
Ethyne, C2H2
What is the mass of 10 moles of sodium sulphite (Na2SO3)?
How many moles are 3.6 g of water ?
What name is given to the amount of substance containing this number of 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
Calculate the mass of 0.1 mole of the following:
Mg
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
If phosphorus is considered to contain P4 molecules, then calculate the number of moles in 100g of phosphorus?
Calculate the number of moles in 7g of nitrogen.
How many grams are there in the following?
3 moles of chlorine molecule, Cl2.
