Some of the gases in Earth's atmosphere, such as CO2, are called greenhouse gases. Greenhouse gases interact with sunlight in a way that traps heat in the atmosphere. By trapping heat, greenhouse gases help insulate Earth. The table below lists some important greenhouse gases and their atmospheric concentrations in units of parts per million (ppm), parts per billion (ppb), or parts per trillion (ppt).

Greenhouse gas Concentration in 2015

Carbon dioxide (CO2) 400 ppm

Sulfur hexafluoride (SF6) 9 ppt

Methane (CH4) 1,750 ppb

Nitrous oxide (N2O) 325 ppb

Use the data in the table to put the following greenhouse gases in order of atmospheric concentration.

Hint: A concentration of 1 ppm is 1,000 times more than 1 ppb, and 1 ppb is 1,000 times more than 1 ppt.

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.