Mass is not expressed in kilometers (km). That is a measure of distance. Mass is expressed in units of kilograms (kg)
6.829*103 km
1 Km = 1000m 1m = 1000mm so 110mm expressed in m = 110 divided by 1000 = 0.11m 0.11m expressed as Km = 0.11 divided by 1000 = 0.00011Km
Km - kilometers, is a unit for distance, and can't be used to measure mass.
Mercury: diameter 4880 km mass 3.302e+23 kg Venus: diameter 12104 km mass 4.856e+24 kg Earth: diameter 12756 km mass 5.9742e+24 kg Mars: diameter 6796 km mass 6.419e+23 kg Jupiter: diameter 142984 km mass 1.899e+27 kg Saturn: diameter 120536 km mass 5.685e+26 kg Uranus: diameter 51118 km mass 8.683e+25 kg Neptune: diameter 49528 km mass 1.0243e+26 kg
Atomic mass
The mass of a mole of a substance expressed in grams is called the molar mass. This value is numerically equal to the atomic or molecular weight of the substance and is expressed in units of grams per mole.
Mass
Mass is.
Mercury: diameter 4880 km mass 3.302e+23 kg Venus: diameter 12104 km mass 4.856e+24 kg Earth: diameter 12756 km mass 5.9742e+24 kg Mars: diameter 6796 km mass 6.419e+23 kg Jupiter: diameter 142984 km mass 1.899e+27 kg Saturn: diameter 120536 km mass 5.685e+26 kg Uranus: diameter 51118 km mass 8.683e+25 kg Neptune: diameter 49528 km mass 1.0243e+26 kg
Yes, mass can be expressed in kilograms. Kilograms are a common unit of mass in the International System of Units (SI).
land mass: 329,560 square km water mass: 4,200 square km
Percent composition is usually expressed as a percent by mass, but in the case of gases and vapors, it is often expressed as a percent by volume.