CaCO3(s) + HCl → CaCl2(s) + CO2(g) + H2O(g)

A large amount of heat is generated by this reaction, so the water produced from the reaction is
usually driven off as steam. Some liquid water may remain, however, and it may dissolve some of the
desired calcium chloride. What is the percent yield if 155 g of calcium carbonate is treated with 250 g
of anhydrous hydrogen chloride and only 142 g of CaCl2 is obtained?

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

Which factor is likely to impact the possible number of compounds ?

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume