If one atom of hydrogen weighs `1.65 xx 10^(-24)` g, then mass of one atom of carbon weighs

Options

A. `1.98 xx 10^(-23) g `
B. `1.65 xx 10^(-24) g `
C. `1.37 xx 10^(-25) g `
D. `1.40 xx 10^(-23) g `

Answer

A

Explanation

An atom of carbon is 12 times heavier than an atom of hydrogen . Therefore , mass of one atom of carbon ` = 1.65 xx 10^(-24) xx 12 = 1.98 xx 10^(-23) g `