Question

2.56 g of hydrogen reacts completely with 20.32 g of oxygen to form x g of water. x = ___ g

Explanation:

Step1: Recall the law of conservation of mass

In a chemical reaction, the total mass of reactants equals the total mass of products.

Step2: Calculate the mass of water

The mass of hydrogen is 2.56 g and the mass of oxygen is 20.32 g. The mass of water (X) formed is the sum of the mass of hydrogen and oxygen that react. So, $X=2.56 + 20.32$.

Step3: Perform the addition

$2.56+20.32 = 22.88$ g.

Answer:

22.88 g