Astudent has samples of two pure compounds, xclo3 and zclo3, which contain unknown alkali metals x and z. the student measures the mass of each sample and then strongly heats the samples to drive off all the oxygen, leaving solid residues of xcl and zcl. the student measures the mass of the solid residue from each sample. which of the following questions can be answered from the results of the experiment?
a. which has the greater molar mass, x or z?
b. which has the higher boiling point, x or z?
c. which has the higher melting point, xcl or zcl?
d. which has the greater density, xcl or zcl?
Answers: 1
Chemistry, 22.06.2019 10:30
Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?
Answers: 3
Chemistry, 22.06.2019 21:30
Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?
Answers: 1
Astudent has samples of two pure compounds, xclo3 and zclo3, which contain unknown alkali metals x a...
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