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8. How many molecules are contained in 0.0525 g of HF? (a) 1.58 x 10 (e)...
The density of magnesium is 1.74 g/cm'. What is the mas x 4.50 cm? (a) 29.4...
The density of magnesium is 1.74 g/cm'. What is the mas x 4.50 cm? (a) 29.4 g (b) 0.103 g (c) 9.70 g (e) none of the above What is the mass of a magnesium block that measures 1.50 cm x 2.50 cm (d) 22.35 Which of the following has 6 pi electrons (a) CH () CHO (c) C,H, (d) CHAO (e) none of the above are correct. n one of the following single centered species has square planar molecular...
At 35°C, K =2.0 x 10-8 for the reaction 2 NOCI(9) = 2 NO(g) + Cl2(9)...
At 35°C, K =2.0 x 10-8 for the reaction 2 NOCI(9) = 2 NO(g) + Cl2(9) Calculate the concentrations of all species at equilibrium for each of the following original mixtures. a. 2.2 moles of pure NOCI in a 2.0-L flask [NOCI) = M [NO] = | М [Cl] = M b. 1.0 mole of NOCI and 1.0 mole of NO in a 1.0-L flask [NOCI) = M [NO] = M (Cl2] = 1 M c. 2.0 mole of NOCl...
How many molecules are in 6.40 g BR2? A. 1.28 x10^22 B. 2.41 x 10^22 C....
How many molecules are in 6.40 g BR2? A. 1.28 x10^22 B. 2.41 x 10^22 C. 1.50 x 10^25 D. 2.83 x 10^25 E. None of above.
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution?...
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution? A) 4.32 x 10-2 mol B) 2.32 x 10-2 mol C) 6.95 x 10-2 mol D) 1.44 x 10-2 mol E) 5.26 x 10-2 mol 23) How many milliliters of a 0.266 M CSNO3 solution are required to make 150.0 mL of 0.075 M CSNO3 solution? A) 53.2 ml B) 42.3 mL C) 18.8 ml D) 23.6 mL E) 35.1 ml 24) What is...
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution?...
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution? A) 4.32 x 10-2 mol B) 2.32 x 10-2 mol C) 6.95 x 10-2 mol D) 1.44 x 10-2 mol E) 5.26 x 10-2 mol 23) How many milliliters of a 0.266 M CSNO3 solution are required to make 150.0 mL of 0.075 M CSNO3 solution? A) 53.2 ml B) 42.3 mL C) 18.8 ml D) 23.6 mL E) 35.1 ml 24) What is...
1. A l64-g sample of HF is dissolved in water to give 2.0 x 10' ml...
1. A l64-g sample of HF is dissolved in water to give 2.0 x 10' ml of solution. The concentration of solution is: A) 0.82 M B) 0.16 M C) 0.08 M D) 4.1 M E) 8.2 M 2. You have 75.0 mL of a 2.50 M solution of Na,CrO(ag). You also have 125 mL of a 2.01 M solution of AgNOs(ag), Calculate the concentration of Cro. after the two solutions are mixed together. A) 0.00 M B) 0.309 M...
At 35°C, K = 2.3 x 10-5 for the reaction 2 NOCI(9) – 2 NO(g) +...
At 35°C, K = 2.3 x 10-5 for the reaction 2 NOCI(9) – 2 NO(g) + Cl (9) Calculate the concentrations of all species at equilibrium for each of the following original mixtures. a. 2.4 moles of pure NOCl in a 2.0-L flask [NOCI) - t t M t [NO] - M t [Cl] - M b. 1.0 mole of NOCI and 1.0 mole of NO in a 1.0-L flask [NOCI] - M [NO] - M (Cl) - M c....
11. Determine the ion product. A) 1.1 x 10-4 B) 1.5 x 10-2 C) 7.8 x...
11. Determine the ion product. A) 1.1 x 10-4 B) 1.5 x 10-2 C) 7.8 x 10-3 D) 8.1 x 10- E) none of these 12. Will precipitation occur? A) Yes. B) No. C) Maybe, it depends on the temperature. D) Maybe, it depends on the limiting reagent concentration. E) None of these. The following questions (11, 12, 13) refer to the following system: 3.5 x 10- mL of 3.2 M Pb(NO3)2 and 2.0 x 102 mL of 0.020 M...
2.9 How many significant figures are in each of the following? a. 11.005 g b. 0.000...
2.9 How many significant figures are in each of the following? a. 11.005 g b. 0.000 32 m c. 36 000 000 km d. 1.80 X 104 kg e. 0.8250 L f. 30.0°C How many significant figures are in each of the following? a. 20.60 mL b. 1036.48 kg c. 4.00 m d. 20.8 °C e. 60 800 000 g f. 5.0 x 10-3L 2.18 2.10
31. When 9.42 g of methane (CH4) is burned in a bomb calorimeter (heat capacity =...
31. When 9.42 g of methane (CH4) is burned in a bomb calorimeter (heat capacity = 2.677 × 103 J/°C), the temperature rises from 24.00 to 27.08°C. How much heat is absorbed by the calorimeter? CH4(g) + 2O2(g) → CO2(g) + 2H2O(l); ΔH° = –1283.8 kJ a. 745 kJ b. 4.84 × 103 kJ c. 8.24 kJ d. 753 kJ e. 1.28 × 103 kJ 32. Which of the following statements is incorrect concerning the wave function? The wave function...
The density of magnesium is 1.74 g/cm'. What is the mas x 4.50 cm? (a) 29.4 g (b) 0.103 g (c) 9.70 g (e) none of the above What is the mass of a magnesium block that measures 1.50 cm x 2.50 cm (d) 22.35 Which of the following has 6 pi electrons (a) CH () CHO (c) C,H, (d) CHAO (e) none of the above are correct. n one of the following single centered species has square planar molecular...
At 35°C, K =2.0 x 10-8 for the reaction 2 NOCI(9) = 2 NO(g) + Cl2(9) Calculate the concentrations of all species at equilibrium for each of the following original mixtures. a. 2.2 moles of pure NOCI in a 2.0-L flask [NOCI) = M [NO] = | М [Cl] = M b. 1.0 mole of NOCI and 1.0 mole of NO in a 1.0-L flask [NOCI) = M [NO] = M (Cl2] = 1 M c. 2.0 mole of NOCl...
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution? A) 4.32 x 10-2 mol B) 2.32 x 10-2 mol C) 6.95 x 10-2 mol D) 1.44 x 10-2 mol E) 5.26 x 10-2 mol 23) How many milliliters of a 0.266 M CSNO3 solution are required to make 150.0 mL of 0.075 M CSNO3 solution? A) 53.2 ml B) 42.3 mL C) 18.8 ml D) 23.6 mL E) 35.1 ml 24) What is...
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution? A) 4.32 x 10-2 mol B) 2.32 x 10-2 mol C) 6.95 x 10-2 mol D) 1.44 x 10-2 mol E) 5.26 x 10-2 mol 23) How many milliliters of a 0.266 M CSNO3 solution are required to make 150.0 mL of 0.075 M CSNO3 solution? A) 53.2 ml B) 42.3 mL C) 18.8 ml D) 23.6 mL E) 35.1 ml 24) What is...
1. A l64-g sample of HF is dissolved in water to give 2.0 x 10' ml of solution. The concentration of solution is: A) 0.82 M B) 0.16 M C) 0.08 M D) 4.1 M E) 8.2 M 2. You have 75.0 mL of a 2.50 M solution of Na,CrO(ag). You also have 125 mL of a 2.01 M solution of AgNOs(ag), Calculate the concentration of Cro. after the two solutions are mixed together. A) 0.00 M B) 0.309 M...
At 35°C, K = 2.3 x 10-5 for the reaction 2 NOCI(9) – 2 NO(g) + Cl (9) Calculate the concentrations of all species at equilibrium for each of the following original mixtures. a. 2.4 moles of pure NOCl in a 2.0-L flask [NOCI) - t t M t [NO] - M t [Cl] - M b. 1.0 mole of NOCI and 1.0 mole of NO in a 1.0-L flask [NOCI] - M [NO] - M (Cl) - M c....
11. Determine the ion product. A) 1.1 x 10-4 B) 1.5 x 10-2 C) 7.8 x 10-3 D) 8.1 x 10- E) none of these 12. Will precipitation occur? A) Yes. B) No. C) Maybe, it depends on the temperature. D) Maybe, it depends on the limiting reagent concentration. E) None of these. The following questions (11, 12, 13) refer to the following system: 3.5 x 10- mL of 3.2 M Pb(NO3)2 and 2.0 x 102 mL of 0.020 M...
2.9 How many significant figures are in each of the following? a. 11.005 g b. 0.000 32 m c. 36 000 000 km d. 1.80 X 104 kg e. 0.8250 L f. 30.0°C How many significant figures are in each of the following? a. 20.60 mL b. 1036.48 kg c. 4.00 m d. 20.8 °C e. 60 800 000 g f. 5.0 x 10-3L 2.18 2.10
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