Question

calculatethe percentage compostion of calcium nitrate [ Ca = 40 ,N =14 , O = 16​

Answer 1

Answer:

For Ca, 24.39 %

For N, 17.07 %

For O, 58.54 %

Explanation:

Please note that all decimal values are correct to two decimal places.

In Calcium nitrate, I would be finding the percentage compositions of all the three elements, Ca, N and O.

Formula of Calcium nitrate is Ca(NO3)2

So, total molecular mass of the compound will be,

40 + 14(2) + 16(3)(2) = 40 + 28 + 96 = 164 amu

For Ca,

Percentage composition = 40/164 x 100 = 24.39 %

For N,

Percentage composition = 28/164 x 100 = 17.07 %

For O,

Percentage composition = 96/164 x 100 = 58.54 %

Answer 2

Answer:

% of ca = ca + (N03) 2 in Ca (NO 3 )2

Explanation:

= 40+2 x 14+ 3 X 2 X 16

= 164 g

% of ca = (40/164) x 100

= 24.39 %

as Same

% of N=(28/164)100=17.07%

%of O = (96/164)100=58.53%