Question

sometimes, you might see parentheses in chemical formulas. parentheses are used if there is more than one molecule. they are also used to separate different molecules from each other. a subscript will be used after the parentheses to show how many molecules there are. for example, there are 6 molecules of rubbing alcohol shown by this chemical formula (c₃h₈o)₆ because there is a 6 outside of the parentheses. write the number of each molecule in the examples below. the first one is done for you. 5. (h₂o)₃ there are 3 molecules of water 6. (c₆h₁₂o₆)₄ there are ____ molecules of sugar 7. (nahco₃)₁₂ there are ____ molecules of baking soda

Explanation:

Step1: Identify the multiplier outside parentheses

For the chemical formula $(C_6H_{12}O_6)_4$, the number outside the parentheses is 4. This multiplier is used to find the total number of molecules.

Step2: Calculate number of sugar molecules

Since the multiplier is 4, the number of sugar ($C_6H_{12}O_6$) molecules is 4.

Step3: For baking - soda formula

For the chemical formula $(NaHCO_3)_{12}$, the number outside the parentheses is 12. So the number of baking - soda ($NaHCO_3$) molecules is 12.

Answer:

1. 4
2. 12