Give the nuclear symbol (isotope symbol) for the isotope of bromine that contains 44 neutrons per atom. nuclear symbol: Give the nuclear symbol (isotope symbol) for the isotope of iron that contains 30 neutrons per atom. nuclear symbol: Give the nuclear symbol (isotope symbol) for the isotope of gold that contains 118 neutrons per atom. nuclear symbol:

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next