Question

a. What is the mass of 0.5 mole of water molecules ? b. How many moles are present in 22 g of carbon dioxide ?​

Answer 1

2737.......................

Answer 2

Answer:

a)What is the mass of 0.5 mole of water molecules ?

ans:-9 grams

Thus, the mass of 1 mole of water is 18 grams. Thus, the mass of 0.5 mole of water .

(H2O) is 9 grams

b)How many moles are present in 22 g of carbon dioxide ?

ans:-Two moles of CO2 weighs 2 x 44 = 88g. The number of moles in 22g of CO2 = 22/44 = 0.5.