Chemistry
to the mass of a
value of x is
rty is not common
ays?
on zns screen
and magnetic field
53. extraction of chromium is done from chromite ore
(feo cr2o3) by using following steps
4feo cr2o3 + 8na, co, + 70,
- na, croa + 2fe2o3 + 8c02
2na, cro, +h,804-> na cr202 + na so, + h20
na, cr, o, + 3c - na, cr,04+ 300
na cr2o4 + h2o → cr2o3 + 2naoh
cr2o3 + 2a1 a1,o2 + 2cr
if 0.2 mole of chromite ore is used initially and rest!
of the reactants are in excess, then mole of
chromium formed will be
(1) 0.2
(2) 0.4
(3) 0.3
(4) 0.6
the moon coloured niament in plants
dent of the nature
tube

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.