Plastics are created from a processed natural material which is pulled up from below the ground. Why is this important? SELECT ALL that apply. A) Processing and using the natural material releases contaminants into the environment.
B) The Natural material is refined through a chemical process to produce the plastic that is carved into a figure.
C) The natural resource is a non-renewable resource.
D) The Plastic products are biodegradable and do not pollute the enviroment.

What element breaks down into yttrium-90?

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.

Witch two conditions can limit the usefulness of the kinetic molecular theory in describing gas behavior?