Question #f34d1

1 Answer
Jarni Renz
Mar 8, 2016

a. #2.26# #g# #N_2#
b.#0.17# #mol# #NO_3#
c. #48.0# #g# #O_2#

Explanation:

  1. First, take all the molar masses of the elements/compound involved in the reactin;
  2. Start solving the problem using dimensional analysis using the values provided in the problem and the molar masses you have just obtained.;
  3. Make sure you have the right equivalence statement based on your computed molar masses and the ratio of the values;

For example you found:

#NO_3# to be #62# #g#/mol

The equivalence statement would be:

#62# #g# of #NO_3# = #1# mole of #NO_3#

The conversion factor would be the ratio of these 2 units and to discern which one is your numerator and denominator greatly lies on your desired unit. Conversion factor can be represented like these:

#(1 mol NO_3)/(62 g NO_3)#

#or#

#(62 g NO_3)/(1 mol NO_3)#

  1. You can do the same calculations as reflected above and please bear in mind to cancel out same units, leaving only your desired unit.
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