Question

Find percentage of oxygen in water (H2O)

Answer 1

Answer:

Explanation:

Mass Percent of Oxygen

The second method is the same as for finding the mass percent of hydrogen. From previous calculations, you know the total molar mass of oxygen in water is 16.00. Divide 16.00 by the total molar mass of water, 18.016, to get 0.8881. Multiply by 0.8881 by 100 to get the percentage: 88.81 percent.

Answer 2

The mass percent of oxygen in water is 88.88 %

Explanation:

To calculate the mass percentage of oxygen in water, we use the equation:

$\text{Mass percent of oxygen}=\frac{\text{Mass of oxygen}}{\text{Mass of water}}\times 100$

Mass of oxygen = 16 g

Mass of water = [(2 ×1) + 16] = 18 g

Putting values in above equation, we get:

$\text{Mass percent of oxygen}=\frac{16g}{18g}\times 100=88.88\%$

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