1. A 5.00 gram sample of a white powder oxide was analyzed and found to contain 2.18 grams of phosphorus, the rest of th

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1. A 5.00 gram sample of a white powder oxide was analyzedand found to contain 2.18 grams of phosphorus, the rest of thesample was oxygen. What is the empirical formula of thiscompound?
2. Write the chemical equation for the reaction betweengaseous ammonia and gaseous oxygen to produce gaseous dinitrogenmonoxide and liquid water.
3. a) Complete and balance the chemical equation and usesolubility rules to indicate if the products are soluble orinsoluble.
(b) Write the complete ionic equation for this reaction. If noreaction writes NR.
KI(aq) + Pb(NO3)2(aq) -->
4.Write the complete andbalanced equation for the reaction of sulfurous acid,HNO3, and water. Choose the correct arrows toindicate if the reaction goes 100% to completion or is a reversiblereaction using equilibrium arrows.