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Name: _____________________Date: _______Period: ____Percentage Composition WorksheetGive the % composition of all elements in these compounds. Show all work!Remember: %푐표푚푝표푠푖푡표푖푛표푓푒푙푒푚푒푛푡=푚푎푠푠표푓푒푙푒푚푒푛푡푚푎푠푠표푓푐표푚푝푢푛푑×100When calculating mass of element don’t forget to account for the subscripts. 1.ammonium sulfite(NH4)2SO3molar mass of compound:% N ______% H ______% S ______% O ______2.aluminum acetateAl(C2H3O2)3molar mass of compound:% Al ______% C ______% H ______% O ______3.sodium bromideNaBrmolar mass of compound:% Na ______% Br ______4.copper (II) hydroxideCu(OH)2molar mass of compound:% Cu ______% O ______% H ______
5.magnesium carbonateMgCO3molar mass of compound:% Mg _____% C ______% O ______6.iron (II) phosphateFe3(PO4)2molar mass of compound:% Fe ______% P ______% O ______7.beryllium nitrideBeN2molar mass of compound:% Be ______% N ______8.potassium cyanideKCNmolar mass of compound:% K ______% C ______% N ______9.manganese (III) nitrate Mn(NO3)3molar mass of compound:% Mn ______% N ______% O ______10.lithium phosphideLi3Pmolar mass of compound:% Li ______% P ______
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