1.

Find the present composition of calcium (Ca), oxygen (O) and hydrogen (H) in calcium hydroxide .

Answer»

centage "COMPOSITION" of "each element" is equal to the "mass of that element" “divided” by the PRESENTTOTAL mass” (the mass of the FORMULA) multiplied by 100%.The GIVEN compound: Substitute the molar mass of each elementMolar mass of Ca = 40Molar mass of O = 16Molar mass of Hydrogen = 1Let's calculate the %compositionPercentage of  %



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