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? 2.1 mc020-2.jpg 103 ng 2.1 mc020-3.jpg 106 ng 2.1 mc020-4.jpg 109 ng 2.1 mc020-5.jpg 1012 ng

Answer 1

Answer: The mass of the sample having 2.1 kg of $NaHCO_3$ will be $2.1\times 10^{12}ng$

Explanation: We are given a sample of sodium bicarbonate $(NaHCO_3)$ having mass 2.1 kg

To convert this into nano-grams, we use the following conversions:

1 kg = 1000 grams

and

$1g=10^9nanograms$

Converting 2.1 kg to nano-grams using above conversions:

$2.1kg=2.1\times (1000\times 10^9)ng=2.1\times 10^{12}ng$

Answer 2

Answer:The mass of sodium bicarbonate in nano grams is $1.2\times 10^{12}$ nano grams.

Explanation:

Given:

1000 g = 1kg

$10^9 ng=1 g$

Mass of the sodium bicarbonate = 2.1 kg

Mass of the sodium bicarbonate in grams =$2.1 kg\times 1000 g=2100 g$

Mass of the sodium bicarbonate in ng = $2100\times 10^9 ng = 2.1\times 10^{12} ng$

The mass of sodium bicarbonate in nano grams is $1.2\times 10^{12}$ nano grams.