you mix 25.3 mL of 0.320 M solution of K2CrO4 with 53.2 mL of a 0.320 M solution of AgNO3, what mass in grams (g) of Ag2CrO4(s) (MM=331.732 g/mol) is formed? Give your answer with three digits to the right of the decimal point. No marks for the unit.   2AgNO3(aq)+ K2CrO4(aq) → Ag2CrO4(s)+ 2KNO3 (aq)

One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. Suppose an EPA chemist tests a 200. mL sample of groundwater known to be contaminated with copper(II) chloride, which would react with silver nitrate solution like this: CuCl2(aq) + 2 AgNO3(aq) → 2 AgCl(s) + Cu(NO3)2(aq) The chemist adds 75.0 mM silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected 6.3 mg of silver chloride. Calculate the concentration of copper(II) chloride contaminant in the original groundwater sample. Round your answer to 2 significant digits. mg L

In the "Methodé Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is )) C6H1206(aq) → 2C2H50H(aq) + 2C02(g) Fermentation of 750. mL of grape juice (density = 1.0 g/cm3) is allowed to take place in a bottle with a total volume of 825. mL until 12.5% by volume is ethanol (C,H;OH). Assuming that the Co, is insoluble in H,0 (actually a wrong assumption), what would be the pressure of CO, inside the wine bottle at 25°C? (The density of ethanol is 0.79 g/cm3)

One can make a silver penny by plating silver onto older (pre-1982) copper pennies according to the following reaction.   Cu(s)  +  2 AgNO3(aq)   2 Ag(s)  +  Cu(NO3)2(aq)   1.27 grams of Copper were added to a solution that contains 5.10 grams of AgNO3. What many moles of Copper (II) nitrate would you expect at the end of the reaction