The element bromine, Br (atomic number 35), has two major isotopes of similar abundance, both around 50 percent. The atomic mass of bromine is reported in the periodic table as 79.904 atomic mass units
Choose the most likely set of mass numbers for these two bromine isotopes. A) Br-80, Br-81
B) Br-79, Br-80
C) Br-79, Br-81
D) Br-78, Br-80
C
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In 1998, the United Nations adopted a treaty to establish the International Criminal Court (ICC) as a way of bringing war criminals to trial. The United States voted against this treaty
Indicate whether this statement is true or false
Matching
6. On the sources and types of air pollutants figure, choose the letter that represents CO, CO2, SO2, NO, NO2, most hydrocarbons, and most suspended particles. 7. On the sources and types of air pollutants figure, choose the letter that represents SO3, HNO3, H3SO4, H2O2, O3, PANs, and most NO3- and SO42- salts.
How does chapter distinguishes between the terms risk and risky?
a. Risk means our sense of what we should act on; risky is what we can technologically, organizationally, and politically enact. b. Risk means the material side of worries and fears; risky is the ideal side of our worries and desires. c. Risk means our sense of what we should worry about, and how much; risky means the the material side of worries and desires. d. All of the above.
Salt crystal growth is most effective in:
a. humid tropics and high latitudes. b. coastal areas and humid tropics. c. high latitudes and coastal areas. d. high latitudes and deserts. e. coastal areas and deserts.