if 37.0g of an unknown mixture (Csh=2.53 J/g celsius at 40.0 celsius are mixed with 50.0g of another unknown mixtures (Csh=3.44 J/g celsius at 20.0 celsius, what is the final temp?

Adozen is 1221/12 = 1.751.75 x 12 = 21therefore, 1.75 is the answer.

Ithink that one is (c)

In reversible reaction chemistry equilibrium is attained when the forward and reverse reactions are taking place at the same rate, thus, the concentrations of reactants and products remain the same. a reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. in irreversible reactions on the other hand, the reactants react to form the products, which cannot revert back into reactants.

Abnormal cell division causes cancer.hope that !