Question

write the chemical formula of the following : (a) ammonium hydroxide (b) calcium chloride (c) calculate the molar mass of H2SO4

Answer 1

a) Al(OH)3
b)Ca(OH)2
c)olar mass of H2SO4 can be calculated by adding the respective molar masses of all the elements constituting it.

Molar mass of H2SO4=

Molar mass of H(x2)+Molar mass of Sulphur(x1)+ Molar mass of Oxygen(x4).

This gives us,

[(1*2)+(32*1)+(16*4)]g/mol

=> [2+32+64]g/mol

=> 98g/mol.

Answer 2

$\huge \mathfrak \red{Hey \:Mateyy}$

$\huge \boxed{Answers :-}$

$<u >$ 1. NH4OH

2. CaCl2

3. Molecular mass is the sum of the atomic masses of the elements in the compound.

Atomic mass are:

O = 16 u, H = 1 u

S = 32 u.

So Molecular mass is :

H2SO4 = (2x1) + 32 + (4x16) = 98 u

Molar mass in grams is numerically equal to the molecular mass in u.

Molar mass of H2SO4 = 98 g.

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