Multiple Choice
Children under the age of 6 with more than 0.10 ppm of lead in their blood can suffer a reduction in I.Q. or have behavior problems. What is the molality of a solution which contains 0.10 ppm of lead?
A) 4.8 × 10 −10 m
B) 4.8 × 10 −7 m
C) 4.8 × 10 −4 m
D) 4.8 × 10 −1 m
E) None of these choices are correct.
Correct Answer:
Verified
Correct Answer:
Verified
Q13: Human blood has a molar concentration of
Q14: A 0.89% (w/v) sodium chloride solution is
Q15: Select the strongest electrolyte from the following
Q16: Which of the following aqueous solutions should
Q17: Soda drinks bubble when the bottle is
Q19: Consider the molecular substances I<sub>2</sub>, H<sub>2</sub>O, and
Q20: A solution of ethanol (C<sub>2</sub>H<sub>6</sub>O) in water
Q21: What volume of concentrated (14.7 M) phosphoric
Q22: Sodium hydroxide is a common ingredient in
Q23: The Tyndall effect<br>A)is observed in concentrated solutions.<br>B)is