a) Find the percentage by mass of I in CaI2 if it is 13.6% Ca by mass. *Round your answer to one decimal place. ________...

Question

Question

a) Find the percentage by mass of I in CaI2 if it is 13.6% Ca by mass. *Round your answer to one decimal place.
_________%

b) Find the percentage by mass of oxygen (O) in N2O4 if it is 30.4% nitrogen (N) by mass.
______%

Answer 1

Answer #1

(a) percentage by mass of I in CaI₂ = 86.4 %

(b) percentage by mass of O in N₂O₄ = 69.6 %

Explanation

(a) Given : percentage by mass of Ca in CaI₂ = 13.6 %

percentage by mass of I in CaI₂ = (total percent) - (percentage by mass of Ca in CaI₂)

percentage by mass of I in CaI₂ = (100 %) - (13.6 %)

percentage by mass of I in CaI₂ = 86.4 %

(b) Given : percentage by mass of N in N₂O₄ = 30.4 %

percentage by mass of O in N₂O₄ = (total percent) - (percentage by mass of N in N₂O₄)

percentage by mass of O in N₂O₄ = (100 %) - (30.4 %)

percentage by mass of O in N₂O₄ = 69.6 %

Answer 2

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