please help . a 100 gram sample of metal undergoes a temperature change from 20 degree c to 50 degree c after absorbing 1,500 j of thermal energy. The specific heat of the metal will be what ?

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

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

How many grams of sodium chloride are in 250ml of a 2.5m naci solution