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The balanced equation is 2H2 + O2 –> 2 H2O. It takes two hydrogen atoms for every oxygen atom to produce this reaction, so the mole ratio between hydrogen and oxygen is 2:1.

## What is the ratio for molecules of h2 gas to O2 gas?

How much oxygen gas would be required to use up all the hydrogen gas? It can be seen that the ratio of hydrogen molecules to oxygen molecules required is always 2:1.

## What is mole to mole ratio of h2 to h2o?

2H2+O2→2H2O. The mole ratios are determined using the coefficients of the substances in the balanced chemical equation. 2molH2:1molO2:2molH2O. The mole ratios for each substance pair would be. 2molH2:1molO2.

## What is the ratio of weight of h2 and O2?

022 × 10 23 = Mass of O 2 Molar mass of O 2 × 6 . 022 × 10 23 or , Mass of H 2 2 = Mass of O 2 32 or Mass of H 2 Mass of O 2 = 2 32 = 1 16 Therefore , ratio of their weights is 1 : 16 .

## What is the ratio of grams of h2 O2 h2o?

Therefore, looking at water and oxygen, they have the same ratio of 1:1.

## How do you find molar ratio from mass ratio?

How to Calculate Mass Ratio

- Step 2: Determine the Mass of Each Individual Element Present. …
- Step 3: Determine the Molar Mass of the Compound. …
- Step 4: Divide the Mass of Each Element Present by the Molar Mass.

## In which of the following the ratio of hydrogen and oxygen atoms is 2 1 *?

Water molecules feature the combinations of hydrogen and oxygen atoms in a 2:1 ratio.

## What is the mole ratio of O2 to co2?

The mole ratio tells you in what exact proportions the reactans will mix and exactly how much products their reaction will produce. In this case, the mole ratio between oxygen and carbon dioxide is 5:3 , i.e. you need 5 moles of oxygen to produce 3 moles of carbon dioxide.

## What is the mole mole ratio Fe2O3?

In one mole of fe2o3 there are two moles of iron atoms. Now gram atomic wt. of Fe is 56.So in one mole of Fe2O3 there are 2×56=112 gm of Fe. Hence in 1.75moles Fe2O3 there are 1.75×2 moles or 1.75×56 gm of iron.

## How do you find mole ratio?

Find the ratio or the moles of each element by dividing the number of moles of each by the smallest number of moles. There are fewer moles of oxygen than any other element, so we will assume one mole of oxygen to establish the ratios.