Question

15g of a compound was found to contain 5.41g of calcium and 9.59g of chlorine.
Calculate the mass percentage of calcium and chlorine in the given compound.​

Answer 1

Answer:

HELLO THERE!

Here's your answer ;)

Compound:- Calcium Chloride.

Molecular Formula: CaCl₂

Molecular mass:- 40 + 2×35.5 = 111

(Atomic mass of Ca = 40 and Cl = 35.5)

Hence,

In 111g of Calcium chloride, there is 40g of Calcium and 71g of Chlorine.

Percentage Composition of Calcium:

\frac{40}{111} \times100 = 36.03

111

40

×100=36.03

Percentage composition of Chlorine:

\frac{71}{111}\times100 = 63.96

111

71

×100=63.96

Thus,

Percentage Composition of Calcium is 36.03%

Percentage Composition of Chlorine is 63.96%.

Answer 2

Answer:

First we find the molecular mass then,

find the percentage of Ca and Cl

Explanation:

Formula: CaCl2

Mass: 40+(2×35.5) = 111u

% of Ca = (40/111) × 100 = 36.03%

% of Cl = (71/111) × 100 = 63.96%

So we have it.