Interpretation: The number of hydrogen molecules in 44.8 L H2(g) at STP should be calculated.
Concept Introduction: Factor that uses one set of units to change it to another set of units is said to be a conversion factor.
Answer to Problem 113A
The number of hydrogen molecules in 44.8 L H2(g) at STP is
Explanation of Solution
The molar volume of any compound at STP is 22.4 L for 1 mol of the compound.
The required conversion factor is:
On solving,
Thus, the number of moles for
Now, to determine the number of hydrogen molecules in
Hence, the number of hydrogen molecules in 44.8 L H2(g) at STP is
Chapter 17 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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