Chem 3.9

scruple 1 (Multiple Choice worth(predicate) 3 points) Which of the following(a) pairs sh are the analogous verifiable pattern?  CH4 and C2H4  PbCl2 and PbCl4  N2O5 and NO2  CH2O and C6H12O6 Question 2 (Multiple Choice charge 3 points) How many moles of oxygen are in 1 mole of Fe(NO3)3?  2  3  6  9 Question 3 (Essay Worth 5 points) A compound that is comprise of atomic number 42 (Mo) and oxygen (O) was produced in a lab by heating minute over a Bunsen burner. The following data was lay in: throne of crucible: 38.26 g Mass of crucible and atomic number 42: 39.52 g Mass of crucible and molybdenum oxide: 39.84 g Solve for the empirical formula of the compound, exhibit (or explaining in complete sentences) your calculations. To engender the dope of molybdenum in the crucible, you subtract the volume of the crucible from the mountain of the crucible and molybdenum: 39.52g - 38.26g = 1.26g To bugger off hold the issue of moly bdenum oxide in the crucible, you subtract the agglomerate of the crucible from the pickle of the crucible and molybdenum oxide: 39.84g - 38.26g = 1.58g To arouse the plurality of oxide, you subtract the push-down store of molybdenum from the mass of molybdenum oxide: 1.58g - 1.26g = 0.32g To get the number of moles of molybdenum you discriminate the mass of molybdenum by its molecular mass: 1.26g/96 = 0.

01 moles To get the number of moles of oxide, break open the mass of oxide by its molecular mass: 0.32g/16 = 0.02 moles thither are double as many moles of oxygen so the empirical formula is: MoO2 39.52g - 38.26g = 1.26g To get t he mass of molybdenum oxide in the crucible,! you subtract the mass of the crucible from the mass of the crucible and molybdenum oxide: 39.84g - 38.26g = 1.58g To get the mass of oxide, you subtract the mass of molybdenum from the mass of molybdenum oxide: 1.58g - 1.26g = 0.32g To get the number of moles of molybdenum you divide the mass of molybdenum by its molecular mass: 1.26g/96 = 0.01 moles To get the number of moles of oxide, divide the mass of oxide by its molecular...If you want to get a luxuriant essay, order it on our website: BestEssayCheap.com

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