Question

0.819 g of phosphorus and 0.650 g of chlorine were allowed to react. After the reaction was complete, all of the chlorine had been consumed, but 0.710 g of phosphorus remained. How many grams of phosphorus were consumed during the reaction?

Answer 1

The initial mass of phosphorus is m = 0.819 g

The mass of phosphorus remained is ,m'=0.710 g

So mass of phosphorous reacted ,M= m-m'

M= 0.819 - 0.710

= 0.109 g

Therefore the mass of phosphorus consumed in the reaction was 0.109 g