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A 251 mL sample of 0.45 M HCl is added to 455 mL of distilled water. What is the molarity of the final...
10) A 251 mL sample of 0.45 M HCl is added to 455 mL of distilled water. What is the molarity of the final solution? (Hint: Find the number of moles of HCl and the total volume of the final solution)
11) How many millilitres of 0.250 M KMnO4 are needed to deliver 0.00450 moles of KMnO4 in a titration?
12) How many fluorine atoms are in 750.0 mL of a 0.500M HF solution?
13) How many moles of NH3 are in a 3.0 L solution of 0.23M NH3?
14) Suppose you needed to prepare a 100.0 mL of 1.05 M NaOH using 1.50 M NaOH, distilled water, and a 100 mL graduated cylinder. How would you do this?
15) Find the mole fraction of glucose, C6H12O6, in a solution that contains 2.1 moles of glucose and 55.49 moles of water.
16) A rigid 5.5 L sealed vessel contains 0.350 moles N2(g), 0.125 moles Ar(g), and 0.110 moles He(g). Find the mole fraction of each gas.
17) A gaseous solution contains 41.0% O2 and 59.0% N2 by mass. Find the mole fraction of each substance in the solution.
11) How many millilitres of 0.250 M KMnO4 are needed to deliver 0.00450 moles of KMnO4 in a titration?
12) How many fluorine atoms are in 750.0 mL of a 0.500M HF solution?
13) How many moles of NH3 are in a 3.0 L solution of 0.23M NH3?
14) Suppose you needed to prepare a 100.0 mL of 1.05 M NaOH using 1.50 M NaOH, distilled water, and a 100 mL graduated cylinder. How would you do this?
15) Find the mole fraction of glucose, C6H12O6, in a solution that contains 2.1 moles of glucose and 55.49 moles of water.
16) A rigid 5.5 L sealed vessel contains 0.350 moles N2(g), 0.125 moles Ar(g), and 0.110 moles He(g). Find the mole fraction of each gas.
17) A gaseous solution contains 41.0% O2 and 59.0% N2 by mass. Find the mole fraction of each substance in the solution.