Answer
2.63 x 10^21 Carbon Atoms
Work Step by Step
C19H28O2 testosterone.
For each molecule of testosterone, there are 28 H atoms as we see by the formula. Therefore, if we have 3.88 x 10^21 H atoms then we divide this number by 28 to find the molecules of testosterone.
3.88 x 10^21 / 28 = 1.39 x 10^20 molecules of testosterone
Each molecule of testosterone has 19 Carbon atoms. Therefore, we multiply this number by 19 to get the number of Carbon atoms
1.39 x 10^20 * 19 = 2.63 x 10^21 Carbon atoms
