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10 Nov 2019
When 1.50 g of an unknown substance is dissolved in 100 g of water, the resulting solution has a freezing point of 0.19degreeC. Determine the molar mass of the unknown substance. The unknown substance is a The freezing point depression constant for water is 1.86degreeC C middot kg/mol A. 147 g/mol B. 28 g/mol C. 190 g/mol D. 1.5 g/mol E. 14.7 g/mol A sample of nitrogen gas has a volume of 160.0 mL at STP, what volume does the gas occupy if the absolute temperature and pressure are each quadrupled? Use the correct number of significant figures A 640.0 ml. B 40.00 ml C 160.0 mL D 160 ml. E 40.0 ml Identify the oxidizing agent in the following reaction: cu + 4 HNO_3 rightarrow NO_2 + Cu(NO_3)_2 + 2 H_2O A NO_2 B Cu C Cu(NO_3)_2 D HNO_3 E H_20
When 1.50 g of an unknown substance is dissolved in 100 g of water, the resulting solution has a freezing point of 0.19degreeC. Determine the molar mass of the unknown substance. The unknown substance is a The freezing point depression constant for water is 1.86degreeC C middot kg/mol A. 147 g/mol B. 28 g/mol C. 190 g/mol D. 1.5 g/mol E. 14.7 g/mol A sample of nitrogen gas has a volume of 160.0 mL at STP, what volume does the gas occupy if the absolute temperature and pressure are each quadrupled? Use the correct number of significant figures A 640.0 ml. B 40.00 ml C 160.0 mL D 160 ml. E 40.0 ml Identify the oxidizing agent in the following reaction: cu + 4 HNO_3 rightarrow NO_2 + Cu(NO_3)_2 + 2 H_2O A NO_2 B Cu C Cu(NO_3)_2 D HNO_3 E H_20
Jarrod RobelLv2
19 Oct 2019