There are two different isotopes of bromine atoms. Under normal conditions, elemental bromine consists of Br2Br2 molecules, and the mass of a Br2Br2 molecule is the sum of the masses of the two atoms in the molecule. The mass spectrum of Br2Br2 consists of three peaks: Mass (amu)(amu) Relative Size 157.836 0.2569 159.834 0.4999 161.832 0.2431 What is the origin of first (mass of 157.836 amu) peak (of what isotopes does each consist)

Which term refers to a property that depends only on the amount of a substance? ©@

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.

Ab c or d ? i’m not sure what the answer is