A Sample of Carotene Is Extracted from a Carrot and Found

question 22

Multiple Choice

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?

• A) 0.021 g
• B) 0.940 g
• C) 1.17 g
• D) 2.00 g
• E) 3.76 g

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Definitions:

Family

A social unit consisting of parents and their children, considered as a group, whether dwelling together or not; also can include a broader network of relatives.

Set Point

A theory suggesting that the body regulates its weight and energy balance through internal controls, aiming to maintain a certain level or "set point."

Evolutionary

Pertaining to evolution, the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.

Yerkes-Dodson

A law suggesting that performance increases with physiological or mental arousal to a certain point, but beyond that, performance decreases.