Physical Chemistry Answers

Calculate ∆G° for the reaction occurring in the following cell :

Al (s) | Al³⁺ 1(M) || Cu²⁺ 1(M) Cu (s)

Standard electrode potentials :

E°= −1.66 V and E°= + 0.34 V
Al³⁺/Al Cu²⁺/Cu

3.50 g of an unknown base is dissolved in 289 mL of water and has a concentration of 0.219 M. What is the identification of the unknown base?

Isopropyl alcohol is mixed with water to produce a solution that is 31.0% alcohol by volume.
How many milliliters of each component are present in 635 mL of this solution?

How many grams of a 26.8% sugar solution contain 29.5 g of sugar?

A solution of CaCl2 in water forms a mixture that is 36.5% calcium chloride by mass. If the total mass of the mixture is 207.4 g, what masses of CaCl2 and water were used?

A 52.0 mL aliquot of a 1.20M solution is diluted to a total volume of 208mL. A 104 mL portion of that solution is diluted by adding 139mL of water. what is the final concentration? assume the volumes are additive.

the density of ammonia, NH3, is 7.71x10^-4 g/ml. calculate the number of miles of ammonia in a 73.1ml sample.

a chemist requires 0.474 mil Na2CO3 for a reaction. How many grams does this correspond to?

how many total atoms are in .220g of P2O5?

calculate the percent composition by mass of each element in KClO2.