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Solutions Worksheet - CHEM 130 A Bazell Fall 2007...

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CHEM 130 A. Bazell Fall 2007 SolutionsSTUDENT.doc 8/29/07 Solutions 1) What is the percent by mass of NaOH in a solution of 1 mol of NaOH in 9 mol of ethanol (C 2 H 5 OH)? 2) A high concentration of mercury in fish is 0.5 ppm. What mass of mercury is present in each kilogram of fish? 3) What is the molarity of a solution of 345 g of Epsom salt (MgSO 4 • 7H 2 O) in 7.50 L of solution? 4) What mass of CaCl 2 is in 2.58 L of a 0.0784 M solution? 5) What volume of a 0.250 M solution contains 37.5 g of KOH? 6) A solution of H 3 PO 4 is found to contain 35.2 g of H 3 PO 4 per liter of solution. Calculate the solutions molarity.
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Unformatted text preview: CHEM 130 A. Bazell Fall 2007 SolutionsSTUDENT.doc 8/29/07 7) How many mL of 0.50 M NaOH are required to neutralize 15.0 mL of 0.35 M H 2 SO 4 ? 8) What volume of 4.50 M H 2 SO 4 should be diluted with water to form 2.50 L of 1.50 M acid? 9) What is the original molarity of a solution if 450 mL is diluted to 950 mL to form a 0.600 M solution? 10) What volume of water must be added to 400 mL of a solution containing 35.0 g of KBr to make 0.100 M solution? 11) What would be the molarity of a solution made by mixing 150 mL of 0.250 M HCl with 450 mL of 0.375 M HCl?...
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