Question

45. a) Chalcogens b) Alkali metals c) Alkaline carth metals d) Halogens c) Noble gases 46. When the cquation: AINOh+NaS a) 2,3,1,6 b) 2,1,3,2 c) 4,6,3,2 d) 2,3,2,3 47 reaction a) NH4CI NH3 + HCI b) 2Mg+02 2Mgo c) 2N2+3H2 2NH3 d) 2CH4 + 402-2C02+4H20 48. Which of the following are combustion reactions? CH4 (g) + O2 (g) → CO2 (g) + H 201) b) a) CaO (s)+ CO2 (g)-CaCO3 (s) c) A. 1 and 4 B. 1,2,3 and4 C. 1,3, and4 PbCO3 (s)-PbO (s) + CO2 (g) CH3OH (I) + O2 (g)-CO2 (g) + H2O (l) d) D. 2,3, and4 49. How many a) 0.8452 b) 1.183 c) 6022 X 102 d) 8648 X 103 c) 3.134 X 10 50. Whatsthemas5%ofcarboninGH-S02 a) 60.0 b) 206 c) 30.7 d) 7.74 c) 79.8 A225g sample of magnesium nitrate contains how many moles of this compound? a) 38.4 b) 65.8 c) 148.3 d) 0.0261 c) 0.0152 51.

Answer 1