Question

according to the law of definite composition, water contains 8 grams of oxygen for every 1 gram of hydrogen. therefore, in 36 grams of water there would be: 8 grams of hydrogen. 32 grams of hydrogen. 9 grams of hydrogen. 4 grams of hydrogen.

Explanation:

Step1: Determine the ratio of hydrogen to oxygen

The ratio of oxygen to hydrogen in water is 8:1. So the total parts of the ratio is $8 + 1=9$ parts.

Step2: Calculate the amount of hydrogen in 36 grams of water

If 36 grams of water is divided into 9 parts (from the ratio), each part is $\frac{36}{9}=4$ grams. Since hydrogen is 1 - part in the ratio, the amount of hydrogen is 4 grams.

Answer:

4 grams of hydrogen.