Question

Convert into mole:
a) 88g of Carbon di oxide.
b) 8g of Oxygen atom.

Answer 1

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

Thus, 12 g of oxygen=321×12=0.375 moles

(b) Molecular weight of water (H2O) in grams= 2+ 16=18 g=one mole of water

Thus, 20 g of water=181×20=1.111 moles

(c) Molecular weight of carbon dioxide (CO2) in grams=12+2×16=44 g=one mole of carbon dioxide

Thus, 22 g of carbon dioxide =441×22=0.5 moles