Which of the following would have the largest amount of mass?
1 nanogram (ng)
1 kilogram (kg)
1 milligram (mg)
1 centigram (cg)

1 kg

Explanation:

prefix nano means 10^-9

kilo 10^3

mili 10^-3

centi 10^-2

the largest amount is 1 kg

The correct answer is B. 1 kilogram (kg)

Explanation:

Mass refers to the amount of matter that can be found in an object or body, this property can be measured using different units such as grams, kilograms, decagrams, centigrams, etc. although each of this, measures different amounts of mass. In this way, the kilogram (kg) is the most common unit used for mass and the largest from the options presented, as a nanogram is equivalent to kilograms, a milligram is equivalent to kilograms and a centigram is equivalent to kilograms, which means all nanograms, milligrams, and centigrams are smaller units than kilograms.

c is the answer because when something is left after something evaporates that shows the chemical change.