what is the percent composition of hydrogen in a compound if the mass of the initial compound is 276 grams…

Answer:

C. 15.0%

Explanation:

Step1: Recall percent - composition formula

Percent composition of an element $=\frac{\text{Mass of element}}{\text{Mass of compound}}\times100%$

Step2: Substitute given values

Here, mass of hydrogen $ = 41.4$ grams and mass of compound $=276$ grams. So, $\frac{41.4}{276}\times100%$

Step3: Calculate the result

$\frac{41.4}{276}=0.15$, and $0.15\times100% = 15.0%$