FW=119.00g/mol) is produced when 25.0mL of Br2(l) (MW=159.81g/mol)  reacts completely with excess potassium metal. The density of liquid bromine is 3.1028g/mL. The relevant chem

For an experiment you are measuring the decomposition rate of organic matter, You have a large amount of CH402 in a container filled with 3.024 Lof water. You Created a saline environment by adding 2.4 g of sodium chloride, 3.6 g of calcium chloride, and 2.8 g of magnesium chloride before diluting. iron (1) oxide is available for the microbes to oxidize the matter into carbon dioxide by forming iron (II) aqueous ions. At the beginning of the experiment, you measure the pH using a probe to be 7.13. After 73 hours you measure the pH again and obtain 7.54. Assuming that the pH change is solely due to the oxidation of organic matter, what is the rate of organic matter decomposition in nanograms per hour?

In the reaction below, how many grams of chlorine gas (Cl₂) are needed to react with 5.393 x 1023 molecules of sodium hydroxide? Cl₂(g) + NaOH(aq) → NaCl(aq) + NaClO3(aq) + H₂O(l) What volume (in L) of 0.125 mol/L Ba(OH)2 solution is needed to react completely with 0.200 L of a 0.300 mol/L HNO3 solution according to the following reaction: Ba(OH)2(aq) + HNO3(aq) → Ba(NO3)2(aq) + H₂O(l) ->>

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 iron(III) chloride, which would react with silver nitrate solution like this: FeCl,(aq) + 3 AgNO,(aq) 3 AgCl(s) + Fe(NO₂),(ag) The chemist adds 21.0 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 3.3 mg of silver chloride. Calculate the concentration of iron(III) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits. e -12 D.P C P