A hot chunk of metal at 120 degrees Celsius is put into water at 20 degrees Celsius. What will happen to the temperatures of the materials?

A. metal and water will both end up at 140 °C
B. metal and water will both end up at 60 °C
C. metal temperature will decrease to 20 °C
D. water temperature will increase to 120 °C

What element is in the lathanide family?

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

Why does ammonia, nh3, behave as a base when it reacts with an acid? z