What are the advantages of the SI system? Select all that apply.

1.It is easy to change from one unit to another.

2.It allows scientists to compare experimental results.

3.It is based on inches and pounds.

4.All its units are based on the number 100

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

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.