What is the density of a plastic ball that has a volume of 6cm3 and a mass of 12g?

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

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form

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