Diamond Is a Pure Form of the Element Carbon

question 76

Multiple Choice

Diamond is a pure form of the element carbon.If a 2 carat diamond has a mass of 0.396 g,how many carbon atoms are contained in this diamond?

• A)3.97 × 10²² atoms
• B)6.58 × 10⁻²⁵ atoms
• C)1.99 × 10²³ atoms
• D)1.99 × 10²² atoms
• E)2.38 × 10²³ atoms

---

Definitions:

Calvin Cycle

A biochemical process in plants, algae, and cyanobacteria which converts carbon dioxide and water into organic compounds, especially sugars, using ATP and NADPH produced in photosynthesis.

Glucose

An elementary sugar that is critical for energy production in living things and is included in a wide range of carbohydrates.

Fructose

A simple sugar (monosaccharide) that is naturally found in fruits, honey, and some vegetables, known for being a part of sucrose (table sugar).

Photoheterotrophs

Organisms that obtain their energy from sunlight but rely on organic compounds from the environment as their carbon source.