Chem 115 - General Chemistry I
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Solution Calculation
Solution Calculation I
How many grams of solute are in 1.75 L of 0.460 M sodium monohydrogen phosphate (Na2HPO4) buffer solution?
Solution Calculation II
One 10.0 mL dose of the antacid contains 0.83 g of magnesium hydroxide (FW=58.33 g/mole). What volume of 0.10 M stomach acid (HCl) could this neutralize?
Solution Calculation III
Mercury can be removed from industrial wastewater through addition of a precipitating agent. What is max mass of mercury(II) sulfide (FW= 232.6 g/mole) can form when 0.050 L of 0.010 M mercury(II) nitrate reacts with 0.020 L of 0.10 M sodium sulfide?
Solution Calculation IV
Calculate the maximum mass of precipitate formed by mixing 10.0 mL of a 0.200 M Na2CO3 solution with 50.00 mL of 0.0500 M Mg(NO3)2 solution.
Solution Calculation V
The concentration of Mg2+ in a sample of coastal seawater is 1.09 g/kg. What is the molar concentration of Mg2+ in this seawater with a density of 1.02 g/mL?
Solution Calculation VI
A typical adult body contains 6.0 liters of blood. The hemoglobin content of blood is about 15.5 g/100.0 mL of blood. The approximate molar mass of hemoglobin is 64,500 g/mol. How many moles of hemoglobin are present in a typical adult?
Solution Calculation VII
Which of the following solutions contains the most particles per liter? (a) 1 M KBr; (b) 1 M Mg(NO3)2; (c) 4 M ethanol; (d) 4 M acetic acid
Solution Calculation VIII
What is the total molar concentration of all the ions in 0.025 M solutions of the following salts in water? (a) KCl; (b) CuSO4; (c) CaCl2
Solution Calculation IX
A puddle of coastal seawater, caught in a depression formed by some coastal rocks at high tide, begins to evaporate on a hot summer day as the tide goes out. If the volume of the puddle decreases to 23% of its initial volume, what is the concentration of Na+ after evaporation if initially it was 0.449 M?
Solution Calculation X
What volume of 0.211 M H2SO4 is needed to react completely with 25.0 mL of 0.172 M NaOH?
Solution Calculation XI
A 15.00 mL sample of HCl required 36.42 mL of 0.147 M Ba(OH)2 to titrate to equivalence. Calculate the concentration of the HCl solution.