Question

The mass of a sample of sodium bicarbonate is 2.1 kilograms (kg). There are 1,000 grams (g) in 1 kg, and 1 mc020-1.jpg 109 nanograms (ng) in 1 g. What is the mass of this sample in ng?

Answer 1

In this problem, we are asked to convert from one unit to another unit. To do this, we need a conversion factor to multiply to the original value. From kg to g, 1000 g is equal to 1 kg. From g to ng, 1 g is equal to 10^9 ng. We convert as follows:

2.1 kg (1000 g / 1 kg) (10^9 ng / 1 g ) = 2.1x10^12 ng sodium bicarbonate