CHEM 6A Study Guide - Quiz Guide: Writing Implement, Permanganate, Chlorate
Quiz #1
CHEM 6A Section A05
Full Name (Last, First)
Student ID (PID)
Person On Left (get to know them)
Person of Right (get to know them)
Score
/30
Before you begin please read the following
suggestions.
1. Please remove all items from your desk besides a writing utensil and authorized
calculator (brain is the best calculator).
2. Periodic table/equation sheet is provided. Please return them with your quiz
3. Show all your work on the space provided. If additional space is absolutely
necessary please use the backside of the last page, and then question me for
extra paper.
4. Partial credit will only be awarded for complete answers showing coherent
thought process.
5. Box your final answer!
6. Turn off all cellular/mobile devices with communication and internet accessing
capabilities.
7. Do not cheat if you wish to pass this class, and be successful in life.
8. At the end please sign the integrity statement.
May the force be with you all
1) Precision and Accuracy? (4 points)
A) Define precision and accuracy. (2 points)
Precision: conveys both how well repeated measurements of a quantity five results that
agree with one another
Accuracy: how close the result is to the true value
B) For the true value of a known length is 50.5 m, give three measurements that would
be (i) accurate, and three measurements that would be (ii) precise but not accurate. (2
points)
(i) Ex: 50.5, 50.5, 50.5
(ii) Ex: 40, 40, 40
2) Dimensional Analysis. (6 points)
A) What is another way of saying Dimensional Analysis? (2 points)
Unit Conversion
B) Convert these values. Answers must have correct number of sig figs. (4 points)
(i) 5.779x109 μm3 = ? in3 (1 in = 0.0254 m)
5.779x109 μm3 *(10^-6 m/ 1 μm)3 * (1 in/ 0.0254 m) 3 = 3.527x10^-4 in^3
(ii) 5550 𝑑𝑜𝑙𝑙𝑎𝑟𝑠
𝑎𝑐𝑟𝑒 = ? 𝐸𝑢𝑟𝑜
𝑚2 (1 acre = 43560 ft2, 1 dollar = 0.89 euro on 09/30/2016)
5550 𝑑𝑜𝑙𝑙𝑎𝑟𝑠
𝑎𝑐𝑟𝑒 * (1 acre/43560 ft2)*(1 ft/12 in)2 *(1 in/0.0254 m)2 *(0.89 eruo/1 dollar)=
1.22 euro/m^2
(iii) Density of diethyl ether = 713 𝑘𝑔
𝑚3 = ? 𝑔
𝑚𝐿
0.713 g/mL
3) Extensive versus Intensive Properties. (6 points)
Circle One:
A) Boiling Point Extensive Intensive
B) Density Extensive Intensive
C) Volume Extensive Intensive
D) Mass Extensive Intensive
E) Length Extensive Intensive
F) Charge Extensive Intensive
G) Temperature Extensive Intensive
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CHEM 6A Full Course Notes
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