How many grams of CaCl2 should be dissolved in 638.2 mL of water to make a 0.39 M solution of CaCl2?

In which direction will the following reaction go if the standard reduction potentials are 0.80 v for ag/ag+ and –0.44 v for fe/fe2+? ag+ + fe → ag + fe2+ a.)forward b.)the reaction cannot occur. c.) not enough information is given. d.) reverse

What is the mass of 4 molecules of co2

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons