The relative formula mass of a substance is the sum of the relative atomic masses close relative atomic mass The mass of the atom compared with that of the carbon-12 isotope, ...

The formula of the law of conservation of mass is as follows: ∂ρ/∂t +⛛(ρv) = 0. Where, ρ = density. t = time. v = velocity ⛛ = divergence. What is the Law of Constant Proportions?

The mass of one mole of any substance is numerically equal to its relative formula mass or relative atomic mass. For example, the relative atomic mass of carbon is 12.