Write the reaction when solid lead (II) cyanide is put into water:  write the reaction when solid potassium sulfate is put into water:

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 cadmium chloride, which would react with silver nitrate solution like this: CdCl₂(aq) + 2 AgNO3(aq) → 2 AgCl(s) + Cd(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 7.0 mg of silver chloride. Calculate the concentration of cadmium chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits. mg L

Solid potassium iodide decomposes into iodine gas and solid potassium ?

Write a balanced chemical equation for this reaction. Chlorine gas and solid phosphorus combine to form phosphorus pentachloride gas

Hexane is a colourless liquid with a characteristic smell that reacts with chlorine gas in the presence of a catalyst. Chlorohexane is a liquid compound that is formed through the substitution of one hydrogen in the hexane molecule with chlorine. Write the chemical equation for this reaction and explain if it requires balancing. Hydrogen chloride gas is also a product of this chemical reaction. Note: ignore the presence of the catalyst.

Write the correct net ionic equation for the reaction of lithium iodide with lead(II) nitrate, which produces a precipitate

Write the balanced net ionic equation for the precipitation of lead (II) hydroxide from aqueous solution:  write the balanced net ionic equation for the precipitation of chromium (iii) sulfide from aquesous solution:

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 cadmium chloride, which would react with silver nitrate solution like this: CdCl2(aq) + 2 AgNO3(aq) → 2 AgCl(s) + Cd (NO3)2(aq) The chemist adds 89.0 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 5.4 mg of silver chloride. Calculate the concentration of cadmium chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits. E d OL E

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(II) carbonate, in concentrated sulfuric acid. The sulfuric acid reacts with the copper(II) carbonate to produce a blue solution of copper(II) sulfate. Scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: Fe(s) + CUSO 4(aq) Cu(s) + FeSO4(aq) Suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. He adds powdered iron to a 450. mL copper(II) sulfate sample from the plant until no more copper will precipitate. He then washes, dries, and weighs the precipitate, and finds that it has a mass of 147. mg. Calculate the original concentration of copper(II) sulfate in the sample. Round your answer to 3 significant digits. ?

Write the net ionic equation that describes the reaction that occurs when solutions of barium nitrate and sodium sulfate are mixed