The amount of matter in an object is _ and a common unit is the _.

volume

Explanation:

The amount of matter contained in a body is called volume.

The volume of a body can be measured by cubic meter,cubic centimeters,liter,milliliter etc

The SI unit of volume is cubic meter

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.