Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Given for this problem:
Element R has a molecular weight of 72.00 Note!! Element R is not a real element.
Element A has a molecular weight of 22.00 Note!! Element A is not a real element.
Given the reaction 2R + 3A = R2A3
q = mass X specific heat X (Tfinal - Tinitial)
specific heat of water is 4.184 J/g oC
% Yield = (actual/theoretical) X 100
Given this hypothetical activity series:
Li > Na > Mg > A > Al > Zn > H > Cu > R > Ag > Pt
Element R has a molecular weight of 72.00
Element A has a molecular weight of 22.00
Given the reaction 2R + 3A = R2A3
If we start with 230 grams of R and 100 grams of A (READ CAREFULLY it is 230 g R and 100 g A!!!)
How many moles of R2A3 can we theoretically make? What is the limiting reactant? If we actually make 0.40 moles of R2A3 what was our yield?
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