# Question #b124d

Sep 15, 2017

The mass of zinc in one tablet is 13.3 mg.

#### Explanation:

Step 1. Calculate the mass of $\text{Zn}$ in the ${\text{Zn"_2"P"_2"O}}_{7}$

$\text{Mass of Zn" = 0.248 color(red)(cancel(color(black)("g Zn"_2"P"_2"O"_7))) × "130.78 g Zn"/(304.72 color(red)(cancel(color(black)("g Zn"_2"P"_2"O"_7)))) = "0.1064 g Zn}$

This is the mass of zinc in eight tablets.

Step 2. Calculate the mass of $\text{Zn}$ in one tablet

$\text{Mass of Zn" = "0.1064 g Zn"/"8 tablets" = "0.0133 g Zn/tablet" = "13.3 mg Zn/tablet}$