The molecular formula of phosphorous oxide in
P.O5
P2O6
P4O10
P3O4
The sum of the relative atomic masses of the elements present in a formula unit is
Relative atomic mass
Relative molecular mass
Relative gram atomic weight
Relative formula mass
The standard atom chosen to compare the man of all other atom is
Fluorine
Hydrogen
Carbon
Oxygen
The mass of the product is equal to the total mass of the reactants. This is
Law of conservation of mass
Law of constant proportion
Law of relative mass
Law of reciprocal proportion
The relative formula mass of NaCl is
35. 5
58.5
18
64
The change on one mole of electrons is
IC
96500 coulombs
600 c
2c
The average mass of the naturally occurring atoms of the element, using a scale where an atom of carbon-12 has a mass of exactly 12
Atomic mass
Molecular mass
Gram atomic mass
Avogadro constant is
6.02 × 1023
6.02 × 1028
7.1 × 10-31
6.02
Elements combined in fixed amounts the form
Solution
Compounds
Mixture
Salt
Hydrated Copper sulphate crystal is
CaSO4 H2O
CaSO4 4H2O
CuSO45H2O
CuSO4
