Brain heart infusion broth, used to grow fastidious microorganisms, is composed of 0.5% beef heart, 1.25% calf brains, 0.25% disodium hydrogen phosphate and 0.2% glucose. How much of each ingredient is in 1 liter of broth? (answer in g )

Which change will decrease the number of effective collisions during a chemical reaction? a. adding a catalyst b. increasing the surface area c. decreasing the temperature d. increasing the reactant concentrations e. increasing the volume of the reactants