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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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Q: The relative molecular mass of water?
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How do you calculate the relative molecular mass of H2O WATER?

Shove a dick in it


What is molecular mass?

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.


What is the atomic mass of water?

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.


what is the molecular mass of water vapour?

The molecular mass of water vapour is 18.01528


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Does 7Be and 7 Li have the same atomic mass?

As they are isobars, they have the same relative molecular mass.


How many moles of aluminum are present in 856g of aluminum sample?

Moles = Mass/ Relative Molecular Mass Aluminum forms Al2 compounds, so the relative molecular mass is 2 * 13 = 26. 856/26 = 32.9 (3sf)


How do you convert from molecular mass to grams per mole?

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.


What is the symbol Mr used for in chemistry?

Mr is the symbol for the relative molecular mass.


What is the relative molecular mass of phosphoric acid?

The rmm of phosphoric acid is 97.976898.


What is RMM?

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.


What the molecular mass of MgF2?

The Atomic Mass of Mg is 24. The atomic mass of fluorine is 19. Therefore the relative mass of the substance is 62.