Question

A virus has a mass of ×9.010−12mg and an oil tanker has a mass of ×3.0107kg . Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.What is the mass of one mole of viruses in grams?

Answer 1

Answer: Mass of one mole of viruses in grams is $54\times 10^{8}$  

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

Given : One virus has mass of = $9.0\times 10^{-12}mg=9.0\times 10^{-15}g$     $1mg=10^{-3}g$

One mole of virus $6.023\times 10^{23}$ has mass of = $\frac{9.0\times 10^{-15}}{1}\times 6.023\times 10^{23}=54\times 10^{8}g$  

Thus mass of one mole of viruses in grams is $54\times 10^{8}$