Dissolve 115.3 grams of mixture X consisting of MgCO3 and RCO3 with 500 ml of dilute H2SO4 solution, and obtain solution A, solid B and 4.48 liters of CO2 (standard specification). To evaporate solution A to obtain 12 grams of anhydrous salt. Heat solid B to constant mass to yield 11.2 liters of CO2 (standard design) and solid D. 1. Calculate the molar concentration of the H2SO4 solution used.
2. Calculate the mass of solids B and D

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.

If a computer chip switches off -on-off in 0.015 us, what is the switching time in nanoseconds?

What are the two most influential greenhouse gases in maintaining the earth's climate? a) carbon dioxide & silicon b) water vapor & carbon dioxide c) silicon & oxygen d) nitrogen & water vapor