Chapter2: Basic Statistical Analysis With Excel
Section: Chapter Questions
Problem 12P
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Question
The temperature is 21 degrees Celsius, barometric pressure is 751mm Hg, calculate the temperature in Kelvin degree.
Transcribed Image Text:Prelaboratory Assignment: Analysis of an Aluminum-Zinc Alloy
1. On the following page, construct a graph of N vs % Al. To do this, refer to equation 5 and
the discussion preceding it. Calculate N for % Al 0, 25, 50, 75, and 100. Place these points
on the graph and Draw the best straight line between them.
%3D
2. A student obtained the following information from this experiment. Complete the chart:
Mass of Capsule
0.1168
Temperature
21c
Capsule + Alloy
0.3522 g
Temperature K
0.235니 g
Barometric
Pressure
Mass of Alloy
751 mm Hg
Mass of Empty
Beaker
Vapor Pressure of
Water (Table 2)
141.2 g_
mm Hg
Beaker + Water
388.3 g
Pressure of H,
atm
Mass of Water
247.18
Volume of Water
0.247/ mL
Volume H, =Volume displaced water =
Moles H, evolved (equation 6)
Liters
moles
Moles H,/g
N, moles of H, per gram of sample
h29
% Al from graph in problem 1
% Al from equation 5
75
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