# REVIEW&CHECK FOR SECTION 4-5 1. A 1.71-g sample of Ba(OH)2(s) was dissolved in water to give...

###### Question:

REVIEW&CHECK FOR SECTION 4-5 1. A 1.71-g sample of Ba(OH)2(s) was dissolved in water to give 250 mL of solution. What is the OH concentration in this solution? (a) 0.010 M (b) 0.040 M (c) 0.080 M (d) 0.10 M 2. You have a 100.-mL volumetric flask containing 0.050 M HCI. A 2.0-mL sample of this solution was diluted to 10.0 mL. What is the concentration of HCl in the dilute solution? (a) 0.10 M (b) 0.010 M (c) 1.0 x 10-3 M (d) 0.25 M 3. What volume of 0.250 M KMnO4(aq) contains 0.500 g KMnO,? (a) 0.791 mL (b) 2.00 mL (c) 12.7 mL (d) 125 mL

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