Final Review Ch. 18 (math) – Flashcards
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| What is the molarity of a solution containing 9.0 moles of solute in 500.0 mL of solution? |
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| 18 M |
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| How many mL of 3 M HCL are needed to make 300 mL of 0.1M HCL? |
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| 10mL |
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| If 2.0 mL of 6.0M HCK is used to make a 500.0-mL aqueous solution, what is the molarity of the dilute solution? |
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| 0.024 M |
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| What is the maximum amount of KCL that can dissolve in 200g of water? (solubility of KCL is 34g/100g of water at 20 degrees Celsius) |
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| 68g |
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| If the solubility of a gas in water is 4.0g/L when the pressure of the gas above the water is 3.0 atm, what is the pressure of teh gas above the water when the solubility of the gas is 1.0g/L? |
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| 0.75 atm |
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| To increase the solubility of a gas at constant temperature from 0.85 g/mL, at 1.0 atm, to 5.1 g/mL, the pressure would have to be increased to ___. |
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| 6.0 atm |
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| What is the molarity of a solution containing 9.0 moles of solute in 500.0 mL of solution? |
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| 18M |
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| What is the number of mole of solute in 250mL of a 0.4M solution? |
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| 0.1 mol |
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| What is the molarity of a solution containing 8 grams of solute in 500mL of solution? (gram formula mass of solute = 24g) |
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| 0.67 M |
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| How many mL of 3M HCL are needed to make 300 mL of 0.1M HCL? |
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| 90mL |
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| If 2.0 mL of 6.0M HCL is used to make a 500.0-mL aqueous solution, what is the molarity of the dilute solution? |
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| 0.83 M |
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| If the percent by volume is 2.0% and the volume of solution is 250 mL, what is the volume of solute in solution? |
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| 5.0 mL |
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| If the percent (mass/volume) for the solute is 4% and the volumer of the solution is 750mL, what is the mass of soluter in solution? |
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| 30 g |
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| What si the colume of alcohol present in 200.0 mL of a 55% (v/v) solution of alcohol? |
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| 110 mL |
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| What is the molality of a solution containing 9.0 moles of soluter in 2.4 kg of solvent? |
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| 3.8M |
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| What is the number of kilograms of solvent in a 0.70 molal solution containing 5.0 grams of solute? (gram formula mass of solute = 30g) |
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| 0.24 kg |
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| What is the boiling point of a solution that contains 3 moles of KBR in 2000g of water? (Kb = 0.512 degrees Celsius/m;gram formula mass of water = 18 g) |
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| 101.5 degrees Celsius |
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| What is the freezing point of a solution that contains 0.5 moles of NaI in 500g of water? (Kf = 1.86 degrees celsius/mole; gram formula mass of water = 18g) |
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| -3.72 degrees celsius |
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| What is the boiling point of a solution of 0.1 mole of glucose in 200 mL of waetr? (Kb = 0.50 degrees celsius/mole) |
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| 100.25 degrees celsius |
