If 32 grams of oxygen are combined with 4 grams of hydrogen, how much water would be formed?

36 g of water will produced.

Explanation:

Given dа ta:

Mass of oxygen = 32 g

Mass of hydrogen = 4 g

Mass of water = ?

Solution:

First of all we will write the balance chemical equation.

2H₂ + O₂ → 2H₂O

Moles of oxygen = mass / molar mass

Moles of oxygen = 32 g / 32 g/mol

Moles of oxygen = 1 mol

Moles of hydrogen = mass / molar mas

Moles of hydrogen = 4 g / 2 g/mol

Moles of hydrogen = 2 mol

Now we compare the moles of water with oxygen and hydrogen.

O₂ : H₂O

1 : 2

H₂ : H₂O

2 : 2

The moles of water produce by hydrogen and oxygen are same.

Mass = moles * molar mass

Mass = 2 mol * 18 g/mol = 36 g