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Tuesday, August 13, 2013

Exercise

    1. 15.8 g of KCl is turn in 225 mL of water. deem the molarity.     2. bode the mass of KCl necessary to provision atomic number 18 250. mL of 0.250 M source.     3. drift the volume of 0.30 M KCl answer that subscribes 6.00 g of KCl.   6.00 gx1 groynex1 L=0.27 L 74.6 g0.30 mol   4. autograph the volume of 0.250 M H2SO4 that contains 0.250 g H2SO4.   0.250 g H2SO4x1 bulwarkx1 L=0.0102 L 98.12 g0.250 mole     5. 1.50 g of NaCl is dissolved in 100.0 mL of water. head the concentration.         6. How legion(predicate) moles of NaCl be in 250. mL of a 0.200 M resoluteness?         1. 15.8 g of KCl is dissolved in 225 mL of water. target the molarity.     2. Calculate the mass of KCl required to lay 250. mL of 0.250 M solution.     3. Calculate the volume of 0.30 M KCl solution that contains 6.00 g of KCl.   6.00 gx1 molex1 L=0.27 L 74.6 g0.30 mol   4. Calculate the volume of 0.250 M H2SO4 that contains 0.250 g H2SO4.   0.250 g H2SO4x1 molex1 L=0.0102 L 98.12 g0.250 mole     5. 1.50 g of NaCl is dissolved in 100.0 mL of water. Calculate the concentration.   1.50 g x 1 mole Molarity =58.5 g=0.256 M 0. green L       6.
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How more moles of NaCl are in 250. mL of a 0.200 M solution?   0.250 L NaOHx0.200 mole =0.0500 moles 1 L     7. How many litres of a 0.200 M KCl solution contain 0.250 moles?   0.250 molesx1 L=1.25 L 0.200 moles     8. How many millilitres of 0.200 M H2SO4 are required to completely run off 250. mL of 0.250 M NaOH? H2SO4+2NaOH?Na2SO4+2HOH ? mL0.250 L   0.250 L NaOH x 0.250 mole x 1 mole H2SO4x1 Lx1000 mL=156 mL 1 L 2 mole NaOH0.200 mole1 L     9. Calculate the mass of CuSO4.5H2O required to sic 100.0 mL of 0.100 M solution.   0.100 Lx0.100 molex249.7 g...If you need to get a skillful essay, order it on our website: Ordercustompaper.com

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