Question

Q1. Convert into mole.

Atomic mass of – C=12u, H=1u, O=16u

a.12 g of oxygen gas

b.20 g of water​

Answer 1

Answer:

(a) Molecular weight of oxygen in grams = 32 g of oxygen= one mole of oxygen gas

Thus, 12 g of oxygen= 32/1 ×12=0.375 moles

(b) Molecular weight of water (H 2O) in grams= 2+ 16=18 g=one mole of water

Thus, 20 g of water= 18/1 ×20=1.111 moles

Answer 2

Answer:

a. 12 gram of oxygen gas...