What mass of oxygen gas will be consumed if 100.0 grams of hydrogen gas are consumed

793.6g of oxygen

Explanation:

Step 1:

We'll begin by writing a balanced equation for the reaction between hydrogen and oxygen. This is illustrated below:

2H2 + O2 —> 2H2O

Step 2:

Determination of the masses of H2 and O2 that reacted from the balanced equation. This is illustrated below:

Molar Mass of H2 = 2 x 1.008 = 2.016g/mol

Mass of H2 from the balanced equation = 2 x 2.016 = 4.032g

Molar Mass of O2 = 2 x 15.999 = 31.998g/mol

Summary:

From the balanced equation above,

4.032g of H2 reacted with 31.998g of O2.

Step 3:

Determination of the mass of O2 that will react with 100g of H2. This is illustrated below:

From the balanced equation above,

4.032g of H2 reacted with 31.998g of O2.

Therefore, 100g of H2 will react with = (100 x 31.998) /4.032 = 793.6g of O2.

Therefore, 793.6g of oxygen gas will be consumed if 100g of Hydrogen is consumed.

a electronegativity decreases beacuse the size of nucleus is bigger.

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