Question

In the first several questions we will walk through the steps of a typical grams to moles--> moles to moles --> moles to grams calculation. Here is the overall question. We will estimate answers to each subsequent step, but by the time you've done these questions you should have a good sense of how to do these problems. How much SO2 in metric tonnes is produced by one day of coal burning at the Rawhide Power Plant north of Wellington, CO where Fort Collins gets its electricity if in one day the power plant burns 2.5 Mtonnes of coal? The general approach is similar to what we did in class when calculating CO2 produced in a combustion reaction. Some fuels/organic molecules have nitrogen (N) and/or sulfur (S). If this is the case we need to see that in addition to CO2 and H2O that NO and SO2 is also produced. You should add this to what you need to know about combustion reactions. So for coal (C135H9609NS), the combustion reaction equation is C135H960,NS + O2 --> CO2 + H2O + NO2 + SO2 (I'll leave it to you to balance it.) Step 1 is to get your starting amount, 2.5 Mtonnes in this case into grams given various conversion factors. Here you need to know that M (for Mega) means 10 (1000000) that there are 1000 kg in a tonne and that there are 1000 g in a kg. So, how many grams is 2.5 Mtonnes of coal? (Write the number out with all the zeros for your answer.)

Answer 1

a.5Mtonne IMtoane = (D tonne a.5Mtonne= 2-5x10 torne 1 tomes 1000k4-10 2-5Mtom ne x 10 tomne x 1M tonne 3.SX1012 i.Mtome 250000 CH4 202- cOr +2H20 1300x 1023 CH4= moles 16 gmal 8125 me meles 3515000 12 50 x 41 mol mars