Which is the molar mass of h2o? 10.02 g/mol 16.00 g/mol 17.01 g/mol 18.02 g/mol

Answer;

Molar mass of water is 18.02 g/mol

Explanation;

-Molar mass of a compound is determined by adding the relative atomic mass of each atom present in the compound. Molar mass of one mole of a compound, it is the weight in grams of  6.02 × 1023 atoms or molecules.

-Therefore; to calculate the molar mass of Water (H2O);  we first know the RAM of hydrogen and oxygen which are; H=1.01 and O= 16.00

Since there is two atom of hydrogen and one atom of oxygen in water;

Then; the Molar mass of water  will be; 2×1.01 + 1 ×16 = 18.02 g/mol

Molar mass:

Molar mass of any element is equal to the atomic mass of that element in the unit of grams. Molar mass is also equal to the mass of 6.02*10^23   atoms of that element.  

The water or H2O is formed from 2 mole of hydrogen and one one of oxygen

The molar mass of H = 1.008 g/ mole

The molar mass of O= 16.00g/ mole

Therefore the molar mass of water = 2* 1.008 g/ mole+16.00g/ mole

                                                    =18.02 / mole

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

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