2questions:

1. 4 fe(s) + 3o2(g) --> 2fe2o3(g)

in a certain reaction, 27.3 g of iron is reacted with 45.8 g of oxygen

how many grams of the excess reactant remain after the reaction is complete

2. n2 (g) + 3h2 (g) --> 2 nh3 (g)

the equation above is the equation for the haber process.

in a certain reaction, you start with 3.0 moles of nitrogen and 5.0 moles of hydrogen,. how many moles of ammonia will be produced in the reaction?

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.

Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.

In medium-sized stars such as the sun, nuclear fusion almost always means the fusing of nuclei to form , but larger stars can produce elements as heavy as