9. In standardizing roughly 0.05M H, SO, solution,1.325g of pure an hydrous sodium carbonate were made up to 250cm' and 25cm' of the solution needed 23.5 cm of
the acid. Calculate the concentration of the acid in gom*. If 906cm? of the acid
were left after the titration, how many cm' of water must be added to the
remaining acid to make it exactly 0.05M?(Ans 5.212, 57.82) SOMEONE PLEASE EXPLAIN HOW TO DO IT!!

Enzymes affect the reactions in living cells by changing the

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.

Large crystals are formed when igneous rocks cool very slowly igneous rocks cool very quickly sedimentary rock is eroded metamorphic rocks change into igneous rock