Chemistry, 11.12.2019 19:31 rhettperkins
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 250 ml sample of groundwater known to be contaminated with copper(ii) chloride, which would react with silver nitrate solution like this: cucl2(aq)+ 2agno3(aq)= 2agcl(s)+ cu(no3)2(aq).the chemist adds 81.0 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 7.7 mg of silver chloride. calculate the concentration of copper(ii) chloride contaminant in the original groundwater sample. round your answer to 2 significant digits
Answers: 2
Chemistry, 21.06.2019 17:30, penny3109
The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. initial mass and yield sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide
Answers: 1
Chemistry, 23.06.2019 00:00, alisonsolis155
Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3
Answers: 3
One way the u. s. environmental protection agency (epa) tests for chloride contaminants in water is...
Mathematics, 21.07.2019 07:30
Biology, 21.07.2019 07:30
Spanish, 21.07.2019 07:30
Biology, 21.07.2019 07:30
History, 21.07.2019 07:30
French, 21.07.2019 07:30