Conservation of Mass in Chemical Reactions: 7th grade Science Question: In a chemical reaction, the total mass of the reactants is 10.0 grams. After the reaction, the total mass of the products must be

A. More than 10.0 grams
B. Exactly 20.0 grams
C. Exactly 10.0 grams
D. Less than 10.0 grams

Compare and contrast refraction of light and sound will give brainliest

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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.