Question

Now, provide the following information about your chosen molecule: Percent composition of each element

Answer 1

% composition of hydrogen = 11.11%

% composition of oxygen = 88.88%

Explanation:

`\begin{gathered} \text{The chosen molecule is H}_2O \\ \text{Firstly, we n}eedtofindthemolecularweightofH_2O \\ \text{Mass of hydrogen = 1} \\ \text{Mass of oxygen = 16} \\ \text{Molecular weight of water = 2(1) + 16} \\ \text{Molecular weight of water = 18g/mol} \\ \\ Water\text{ has 2 atoms of hydrogen and 1 atom of oxygen} \\ \text{ \% composition of hydrogen = }\frac{mass\text{ of hydrogen}}{\text{mass of water}}\cdot\text{ 100\%} \\ \text{mass of hydrogen = 2},\text{ and mass of water = 18} \\ \text{ \% composition of hydrogen = }(2)/(18)\cdot\text{ 100\%} \\ \text{ \% composition of hydrogen = 0.111111 }\cdot\text{ 100\%} \\ \text{ \% composition of hydrogen = 11.11\%} \\ \\ \text{ \% composition of oxygen = }\frac{mass\text{ of oxygen}}{\text{mass of water}}\cdot\text{ 100\%} \\ \text{mass of oxygen = 16} \\ \text{ \% composition of oxygen = }\frac{16}{18\text{ }}\cdot\text{ 100\%} \\ \text{ \% composition of oxygen = 0.888 }\cdot\text{ 100\%} \\ \text{ \% composition of oxygen = 88.88\%} \end{gathered}`