Abalance is best used to measure a sample’s
a. volume
b. length
c. mass
d. size

Mass

Explanation:

A balance is used to measure the mass of an object. Mass is defined as the quantity of matter an object contains. We have difference kind of balance depending on the kind of object to be measured. Example of balance includes the spring balance, beam balance, chemical balance etc. The unit of mass is in kilogram which is the standard international unit. Mass is known as one of the fundamental units which are independent i.e they can stand alone. Derived units like momentum, force are derived from them.

To measure the mass of a chicken bought in the market for example, a mass balance can be used to measure the quantity of the mass.

Answer C) Mass is correct

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg