CUMULATIVE EXAM! The graph below compares the total amounts of greenhouse gas emissions expected for future mid-size cars, including emissions that occur when moving fuels from their original source to fueling stations where people can buy the fuels for their cars. Amounts are shown in grams of CO₂ (or equivalent greenhouse gas) per mile driven by the mid-size car.

Which vehicles are the best choices for environmentally friendly cars?

A. fuel cell electric and battery electric

B. hybrid electric and plug-in hybrid electric

C. conventional internal combustion and hybrid electric

D. conventional internal combustion and battery electric

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.