Helium (he), neon (ne) and argon (ar) are all colorless, odorless gases with low chemical reactivity. based on the periodic table, which of the following is correct? a. chlorine (cl) is a colorless, odorless gas with low chemical reactivity. b. carbon (c) is a colorless, odorless gas with low chemical reactivity. c. selenium (se) is a colorless, odorless gas with low chemical reactivity. d. xenon (xe) is a colorless, odorless gas with low chemical reactivity.

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

Which characteristics can be used to differentiate star systems? check all that apply.

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.