Water is composed of two hydrogen and an oxygen atom. Their respective atomic numbers are 1 and 16. Therefore the RMM of water is 2x1+16=18.
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the relative molecular mass or molecular weight of a compound is the mass of a molecule of the compound relative to the mass of a carbon atom taken as exactly 12.
The relative atomic mass of hydrogen is 1 and for oxygen it's 16. This gives water (which has the formula H2O) a molecular mass of 18.
The molecular mass of water vapour is 18.01528
100 grams
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the relative molecular mass or molecular weight of a compound is the mass of a molecule of the compound relative to the mass of a carbon atom taken as exactly 12.
The relative atomic mass of hydrogen is 1 and for oxygen it's 16. This gives water (which has the formula H2O) a molecular mass of 18.
The molecular mass of water vapour is 18.01528
100 grams
As they are isobars, they have the same relative molecular mass.
Moles = Mass/ Relative Molecular Mass Aluminum forms Al2 compounds, so the relative molecular mass is 2 * 13 = 26. 856/26 = 32.9 (3sf)
Relative molecular mass is obtained by summing up the atomic masses of atoms in the formula. The gram molecular mass denotes the mass of a mole of the substance in grams. Both of them are same in number.
Mr is the symbol for the relative molecular mass.
The rmm of phosphoric acid is 97.976898.
RMM is Relative Molecular Mass. e.g. water: 1 mole of water = 18g It is the mass of all the atoms in the molecule added up. The mass of hydrogen is 1 and oxygen is 16 Water is H20 so there are 2 hydrogens and 1 oxygen, this gves a mass of 18. The mass can be found on the periodic table.
The Atomic Mass of Mg is 24. The atomic mass of fluorine is 19. Therefore the relative mass of the substance is 62.