Question

One microgram is equal to 1 * 10^-6 gram. If the mass of a substance is 8 * 10^9 micrograms, what is its mass in grams?

a) 8,000 grams
b) 800 grams
c) 80 grams
d) 8 grams

Answer 1

The Correct option is a). To find the mass of a substance in grams from micrograms, multiply the number of micrograms by 1 x 10^-6. Therefore, 8 x 10^9 micrograms is equal to 8000 grams.

Step-by-step explanation:

The mass of the substance in grams can be found by converting the given mass from micrograms to grams. We use the conversion factor that one microgram is equal to 1 x 10^-6 grams. To convert 8 x 10^9 micrograms to grams, we multiply the number of micrograms by the conversion factor:

Mass in grams = mass in micrograms x 1 x 10^-6 g

Mass in grams = 8 x 10^9 x 1 x 10^-6 g

Mass in grams = 8 x 10^3 g

Mass in grams = 8000 grams

Therefore, the mass of the substance is 8000 grams.