4. A 5.75g sample of magnesium nitrate contains. a. 38,4 b. 65,8 c. 0.039 d. 0.0261 c. 0.0152 5. In the following reaction, 3Mg+N2MgN2,a8.64g sample of N r reats completely. Tla mase of Mg consumed is grams. a. 8.04 b. 24.1 c. 16.1 d. 0.92 c. 22.5 5. Rekir wi the fillowing reaction: 4NH3+7O24NO2+6H2O ne wevbustion of $2.2g of ammonia consumes g of oxygen. a. 106.1 b. 54.1 c. 108 d. 15.3 c. 28.8 2 Calsulate how many moles of NO2 form when each quantity of reactant completely roacts. 2N2O2(g)4NO2(g)+O2(g)a.3.5malNiO3 b. RinNa