Which of the following two atoms will bond to form a compound with a low boiling point? a. O and Br
b. Au and Ag
c. Cu and S
d. Zn and K

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products