Question

directions: look at the formula for glucose: $c_6h_{12}o_6$
which of the following statements are true about this molecule?

• there are a total of 24 atoms in one molecule of glucose.
• the formula shows 6 different elements are present.
• there are exactly 12 hydrogen atoms in the molecule.
• the ratio of carbon to oxygen atoms is 1:1.
• this compound is held together by ionic bonds because it contains carbon.

Explanation:

1. Calculate total atoms: $6+12+6=24$, so this is true.
2. Glucose has 3 elements (C, H, O), not 6, so false.
3. The subscript of H is 12, so 12 H atoms, true.
4. C:O ratio is $6:6=1:1$, so true.
5. Carbon-containing compounds (organic) use covalent bonds, not ionic, so false.

Answer:

• There are a total of 24 atoms in one molecule of glucose.
• There are exactly 12 hydrogen atoms in the molecule.
• The ratio of Carbon to Oxygen atoms is 1:1.