Question

calculate the percentage composition of calcium oxide (cao) given that ca=45 u 0 = 16u​

Answer 1

Answer:

1.Ca= 80percent

2.O = 28 percent

Explanation:

percentage composition = molar mass of component /

total mass

Step 2:

answer ×. 100

total mass of CAO= 56.0774

Answer 2

Answer:

hey, here's your answer.

Explanation:

FORMULA:

Please refer the attached image for the formula.

You have to calculate % Composition of elements separately.

SO,

45

% of Ca = -------- ×100 [here,

61 61=45+16 (total mass]

% of Ca = 73.77

SIMILARLY,

16

% of O= ---------- ×100

61

% of O = 26.22

VERIFICATION:

Add 73.77 and 26.22

you'll get 99.99 ~ 100

you'll get 99.99 because we only took 2 decimals after dividing, if we took all of them it would be perfectly 100%.

Hope this helps you

THANKS YOU