28-Molarity-molality-Prob

28-Molarity-molality-Prob - o C and 4.89 grams of KI KI is...

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GCHEM II MOLARTY & MOLALITY CONCEPT PROBLEMS 1) A beaker contains 21.5 cm 3 of sodium chloride solution. How many mls of sodium chloride solution are in the beaker ? 2) What is the mass of 456.3 ml of H 2 O at 18.4 o C ? 3) Water in a flask at 24.7 o C has a mass of 212.4 grams. What volume of water is in the flask ? 4) A solution was made in the lab with 34.5 grams of zinc chloride and 1,104.5 grams of water at 17.5 o C. ZnCl 2 is an ionic or molecular compound (circle) Molarity ? molality ? 5) A solution was made in the lab with 45.3 mls of water at 25.8
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Unformatted text preview: o C and 4.89 grams of KI. KI is an ionic or molecular compound (circle) Molarity ? molality 6) Solution was made with 62.0 mls of ethylene glycol (d =1.786 grs/ml & MM 60.06 grs/mole) and 200.0 mls of water at 24.4 o C. Is ethylene glycol an ionic or molecular compound (circle) ? Molarity ? molality ? 7) A solution is made with 15.0% by mass ethanol (CH 3 OH) and 85.0% water (d = 1.452 grams/cm 3 ) and temperature 22.6 o C ). Ethanol is an ionic or molecular compound (circle) Molarity ? molality ?...
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