Advertisements
Advertisements
Question
Determine the number of molecules in a drop of water which weighs 0.09 g.
Advertisements
Solution
18 g of water has number of molecules = 6.02 x 1023
∴ 0.09 g of water will have no. of molecules = `(6.02 xx 10^23)/18 xx 9/100`
= 3.01 x 1021 molecules
RELATED QUESTIONS
Calculate the molar mass of the following substance:
Hydrochloric acid, HCl
Calculate the number of moles in 12g of oxygen gas.
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
The ratio of moles of atoms in 12 g of magnesium and 16 g of sulphur will be :
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Sodium chloride
Define the term.
Molar volume
Explain the term:
Gram mole
Find the number of molecules in 73 g of HCl.
What is Molar volume of a gas?
