Unit 1 Study Guide
It is estimated that uranium is relatively common in the
earth's crust, occurring in amounts of 4 g / metric ton. A metric
ton is 1000 kg. At this concentration, what mass of uranium is
present in 1.5 mg of the earth's crust?
A) 6 na
Chemistry II Honors Unit 4 Study Guide
An unknown substance dissolves readily in water but
not in benzene (a nonpolar solvent). Molecules of what type are
present in the substance?
A) neither polar nor nonpolar
C) either polar or nonpolar