The Mass of an Atom of ¹²C Is Exactly 12

question 51

Multiple Choice

The mass of an atom of ¹²C is exactly 12 atomic mass units. Which of the following describes a mole of ¹²C atoms?

• A) a sample which contains 6.02 × 10²³ atoms of ¹²C
• B) a sample which weighs exactly 12.011 grams
• C) both a and b
• D) neither a nor b

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Definitions:

Green Algae

A large group of photosynthetic eukaryotic organisms that include many types of seaweed and many unicellular forms.

Seedless Plants

Plants that reproduce without the formation of seeds, such as ferns and mosses.

Gametangia

Gametangia are specialized organs or cells in fungi and plants where gametes are formed, playing a crucial role in sexual reproduction.

Unicellular

Referring to organisms made up of a single cell, capable of performing all necessary life functions within that solitary cell.