Question 1
At the start of 1980, the average lead content in blood had dropped to about 10 μg/dL blood. How many mg is that in 2.0 gallons of blood? (1 gallon = 3.7854 L)
◦ 760 mg
◦ 0.80 mg
◦ 0.76 mg
◦ 0.20 mg
◦ 80 mg
Question 2
Both gypsum and plaster of Paris contain the same compound, but in different stages of hydration. That compound is:
◦ BaSO
4 ◦ BaCO
3 ◦ CaSO
4 ◦ CaCO
3 ◦ KAl(SO
4)
2