Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Could I have help with question #10 on this sheet
Transcribed Image Text:CHEM107 Take Home Quiz 1 Gases
NAME anyah ward
50 points
DATE 1/19/2023
Answer the following questions showing all work along with all
formules/equations/derivations used. No step by step work, no credit! Due Tuesday 1/24/23.
1. What volume will a sample of oxygen gas occupy in a syringe at 1500mmHg, if the
oxygen gas has a volume of 35.0 ml. at 2.3 atm?
2. Sketch the graphical representation of Boyle's law and mention 2 real life application of
the law (No need to use graph sheet)
3. Sketch the graphical representation of Caylussac's law and mention 2 real life
applications of the law. (No need to use graph sheet)
4. A sample of gas initially has a volume of 859 ml. at 565 K and 2.20 atm. What pressure will
the sample have if the volume changes to 268 ml. while the temperature is increased to 815 K?
5. A 0.565 g sample of an unknown compound occupies 345 ml. at 25°C and 3.22 atm.
What is the molar mass of the unknown compound? R-82.01mlammol
6 A mixture of 2.0 g of Xenon (Xe) gas and 3.0g of Argon (Ar) gas has a total pressure of
40.5 atm. What is the partial pressure of each gas?
7. If a 50.0 L tank contains 60g He gas and 85.6g CO; gas at 135 °C calculate the total
pressure of the gas mixture in the tank? R-0.0821Latmmol K
8. Rank the following 4 gases from least dense to most dense at STP and clearly explain your
answer. Br SO, Ar, N₂.
9. A gas tank contains 2 gases PO, and CO. If 0.029 moles of P/O. effuses through a
pinhole in the tank in 3seconds, how many moles of CO₂ would effuse in that same
amount of time.
10. Calculate the average speed of gaseous Bry molecule at -55°C.
Use R-8.31x10' gm'smelk
D
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