Select what you think is the best interpretation of the graph. A. The train sped up during the first 3 minutes, slowed down for several minutes, then sped up again.

B. The train went uphill, traveled on flat ground, then went uphill again.

C. The train sped up for 3 minutes, traveled at a steady speed for 2 minutes, then sped up again.

D. The train sped up then slowed down during the first 3 minutes, stopped for two minutes, then sped up again.

E. The train traveled at a steady speed uphill for most of the way except for in the middle when it stopped for 2 minutes.

Help please..

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

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.

What is the common name for the compound shown here? enter the common name of the compound shown?