Which of the following is true of effective collisions?
A) The number of effective collisions determines the reaction rate.
B) The number of effective collisions increases as the temperature is increased.
C) both a and b
D) neither a nor b
C
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Temperature changes from one year to the next are called ____________________ temperature variations
Fill in the blank(s) with correct word
A discount rate is the estimate of a resource's future economic value compared to its present value.
Answer the following statement true (T) or false (F)
Which Soviet leader introduced new policies of glasnost and perestroika to allow a more democratic political system?
a. Gorbachev b. Putin c. Lenin d. Stalin e. Yeltsin