Question

How many kilograms are in 16.3 nanograms? Please help me finalize my answer with proper significant figures & the reason behind the certain amount of significant figures.

I am confused by this problem.

a.) 16.3kg
b.) 1.63 x 10^4kg
c.) 1.63 x 10^-11kg
d.) 1.63 x 10^12 kg

Answer 1

c

Explanation:

1 nanogram is 1 x 10^-12 kg

16.3 nanogram * 1 x 10^-12 kg/ nanogram = 16.3 x 10^-12 = 1.63 x 10^-11 kg