Question

A medical lab technician measures the mass of cholesterol in a blood sample. the mass is ×3.58110−5g . what is the mass in micrograms? write your answer as a decimal.

Answer 1

Answer :

The correct answer is  35.81 micro gram.

Given : Mass of cholesterol = 3.581 * 10⁻⁵ g

Mass of g need to be converted to micro gram . Following steps can be involves :

Step 1 : Find the conversion factor :

1 gram = 1000000 micro gram or  10⁶ micro gram

Step 2 : To do the conversion :

Start with what is given  and multiply with the conversion factor :

$Mass of cholesterol = 3.581 * 10^-^5 g * \frac{10^6 micro gram}{1 g}$

Grams being on top as well on bottom , get cancelled . Hence  micro gram is left as unit .

$Mass of cholesterol = 3.581 *10^-^5 * 10^6 micro gram$

Mass of cholesterol = 3.581 * 10¹  micro gram

Mass of cholesterol = 35.81 micro gram