A sample of carotene is extracted from a carrot and found to contain 17.9 g of carbon and 2.1 g of hydrogen. A second carotene sample is synthesized in the lab and found to contain 10.0 g of carbon. How many grams of hydrogen are in the second sample?

Question

Quizplus · Accepted Answer

The ratio of carbon to hydrogen in the first sample is 17.9 g C : 2.1 g H. To find the amount of hydrogen in the second sample, which contains 10.0 g of carbon, use the ratio: (2.1 g H / 17.9 g C) * 10.0 g C = 1.17 g H.

A Sample of Carotene Is Extracted from a Carrot and Found