Answer
H2C2O4
Work Step by Step
HCO2 is the empirical formula.
H is 1
C is 12
O is 16 so 2*16 = 32
1 + 12 + 32 = 45 g/mol
The molar mass is 90 so 90/45 = 2.
We multiply the empirical formula by 2 and get H2C2O4
Chemistry: The Central Science (13th Edition)
by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.
Published by
Prentice Hall
ISBN 10:
0321910419
ISBN 13:
978-0-32191-041-7
Chapter 3 - Chemical Reactions and Reaction Stoichiometry - Exercises - Page 115: 3.52a
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