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Unformatted text preview: 0.050 M solution? 0.50 grams 2) How many grams of beryllium chloride would you need to add to 125 mL of water to make a 0.050 molal solution? 0.50 grams 3) The density of ethanol is 0.789 g/mL. How many grams of ethanol should be mixed with 225 mL of water to make a 4.5% (v/v) mixture? 7.99 grams 4) Explain how to make at least one liter of a 1.25 molal ammonium hydroxide solution. Dissolve 43.8 grams (1.25 moles) of ammonium hydroxide in 1 L H 2 O. 5) What is the molarity of a solution in which 0.45 grams of sodium nitrate are dissolved in 265 mL of solution. 0.020 M 6) What is the mole fraction of sulfuric acid in a solution made by adding 3.4 grams of sulfuric acid to 3,500 mL of water? 1.8 x 10-4 7) What will the volume of a 0.50 M solution be if it contains 25 grams of calcium hydroxide? 680 mL 8) How many grams of ammonia are present in 5.0 L of a 0.050 M solution? 4.3 grams 2004 Cavalcade Publishing, All Rights Reserved For chemistry help, visit www.chemfiesta.com...
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- Fall '09