9. The “power plant” of the cell is the (a) nucleus.

(b) ribosome.

(c) chloroplast.

(d) mitochondria.

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol