If the molarity of a 50 mL Fe2+ solution is 6.53*10-5, what is the concentration in ppm?​

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.