THINK Relating Volume and Absolute Temperature
ABOUT IT
Temperature (K)
Volume (L)
How well can you apply Charles's law to this
sample of gas that experiences changes in
pressure and volume? Assume that pressure and
number of moles of gas are constant in this
problem
295
1.0
А
13
250
Using the first volume and temperature reading on
the table as V1 and T1. solve for the unknown
values in the table below. Remember to use the
rules of significant figures when entering your
numeric response
325
D
0.75
A:
C:
D:
DONE
5) Intro

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Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)