An element’s shows the number of protons in its atom. mass number

isotope number

atomic mass

atomic number

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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

What causes most sediment to wash or fall into a river