Which best describes the two types of shared characteristics? 1 - characteristics that remain in the common ancestor and the modern organism 2 - characteristics that are new and have been modified from what was found in the common ancestor 1 - characteristics that are new in the common ancestor and the modern organism 2 - characteristics that have been modified from what was found in the common ancestor 1 - characteristics that have been modified in the common ancestor but not in the modern organism 2 - characteristics that are new in both the common ancestor and the modern organism 1 - characteristics that remain in the common ancestor and the modern organism 2 - characteristics that are new in both the common ancestor and the modern organism

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

How do you convert 4 mmol of bromobenzene to ml?

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.