Question

If one atom of carbon weighs 1.99 × 10^−22 g and one atom of hydrogen weighs 1.67 × 10^−27 g, which element weighs more? Explain your choice.

Answer 1

The atom of carbon weighs more

Explanation:

we have

Atom of carbon weighs

`1.99*10^(-22)\ g=1.99*10^(-22)((10^(5))/(10^(5)))=199,000*10^(-22)((1)/(10^(5)))=199,000*10^(-27)\ g`

Atom of hydrogen weighs

`1.67*10^(-27)\ g`

Compare

`199,000*10^(-27)\ g > 1.67*10^(-27)\ g`

therefore

The atom of carbon weighs more