Use the appropriate percent composition relation to calculate the weight of Ca i

Question

Use the appropriate percent composition relation to calculate the weight of Ca in (1.60x10 1) g of Ca3(P04)2. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units Save Question 6 (10 points) In accordance with the correct answrs to the previous question, solve the following problem. what mass of salt in contained in (5.20x10^1) g of a (2.346x10^0) 96 salt in water solution? Give your answer in 3 SF's Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units

Explanation / Answer

no of mol of Ca3(PO4)2 = W/MWT = 1.6*10^1/310.2 = 0.0516 mol

1 mol Ca3(PO4)2 = 3 mol ca

no of mol of Ca = 3*0.0516 = 0.155 mol

mass of Ca = 0.155*40 = 6.2 g

answer: 6.2*10^0 g

6)

from the given data,

%(m/m) of solution = 2.346*10^0 %

that means 2.346 g salt present in 100 grams solution.

so that,

mass of Salt in given sample = 5.20*10^1*2.346/100 = 1.22 g

answer: 1.22*10^0 g

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