Question

26. Ammonium chromate, (NH4)2CrO4, contains what percent nitrogen by mass? 36.8% 9.2% 18.4% 11.9% none of these E) 27. B) WPCIs + xH20 →yPOCl3 + HCI The above equation is properly balanced when: A) w= 1, x=2, y = 2, z=4 w=2, x=2, y = 2, z = 2 C) w=2, x = 2, y = 2, z= 1 w= 1, x= 1, y = 1, z = 2 none of these Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation: 4NH3 + 502 → 4NO + 6H20 What mass of NO can be produced from 9.14 g of NH3? 5.19 g NO 16.1 g NO 9.14 g NO 24.2 g NO 20.1 g NO Consider the following reaction: CH,(g) + 4C12(g) → CCI (8) + 4HCl(g) What mass of CCl4 will be formed if 1.20 moles of methane react with 1.39 moles of chlorine? A) 185 g B) 214 g C) 855 g D) 53.5 g E) 24.6 g

Answer 1

26 molar mass of (NH 4 ) 2 Crou = Isaglamol mass % GN= 2x14 8 x 100 Tsaglind 18.4% ③ wpus +2H2O → POU, tzH ce Balance ce by 2x HCl , U=5 H=2 Balanced equation pels + H₂O - IPolls + 2Hce D) w=l, a=1, y=1,2=2