Question

$\huge \underline \bold \red {\: Question....}$

calculate the percentage of each element in the given compounds. (a) potassium sulphate (b) sodium sulphate (c) calcium carbonate.

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Answer 1

Answer:

Potassium sulphate(K2SO4)=174.259

➡️Potassium(k) =39.09=>2×39.09

=>78.18%

➡️Potassium %age=78.18/174.259×100

=>44.86%

➡️Sulphate(SO4)=96.06

➡️Sulphate %age=96.06/174.259×100

=>55.12%

b)

➡️Sodium sulphate(Na2SO4)=142.04

➡️Sodium(Na)=23=>2×23=>46

➡️Sodium %age=46/142.04×100

=>32.38%

➡️Sulphate(SO4)=96.06

➡️Sulphate %age=96.06/142.04×100

=>67.62%

C)

➡️Calcium carbonate(CaCO3)=100.089

➡️Calcium(Ca)=40.07

➡️Calcium %age=40.07/100.089×100

=>40.03%

➡️Carbonate(CO3)=60.008

➡️Carbonate %age=60.008/100.089×100

=>59.95%

Answer 2

Answer:

$\huge \underline \bold \red {\: Question....}$

calculate the percentage of each element in the given compounds. (a) potassium sulphate (b) sodium sulphate (c) calcium carbonate.

Answer ⬇

Potassium sulphate(K2SO4)=174.259

➡️Potassium(k) =39.09=>2×39.09

=>78.18%

➡️Potassium %age=78.18/174.259×100

=>44.86%

➡️Sulphate(SO4)=96.06

➡️Sulphate %age=96.06/174.259×100

=>55.12%

b)

➡️Sodium sulphate(Na2SO4)=142.04

➡️Sodium(Na)=23=>2×23=>46

➡️Sodium %age=46/142.04×100

=>32.38%

➡️Sulphate(SO4)=96.06

➡️Sulphate %age=96.06/142.04×100

=>67.62%

C)

➡️Calcium carbonate(CaCO3)=100.089

➡️Calcium(Ca)=40.07

➡️Calcium %age=40.07/100.089×100

=>40.03%

➡️Carbonate(CO3)=60.008

➡️Carbonate %age=60.008/100.089×100

=>59.95%

Thanks..