Question 7 a) A solution of 0.100 M NaOH is used as the titrant in a titration. 21.05 mL of NaOH is delivered into a 25.00 mL sample of HCl. The molarity of the HCI = ___ M.

b) The same NaOH solution is used to titrate an unknown solution of H2SO4. The 25.00 mL sample of acid requires 45.17 mL of NaOH to reach its equivilence point. The molarity of the unknown acid = ___ M.​

How have the greenhouse gasses increased from the year 2000 to 2018

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.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?