CHEM 103 Final Exam (Version-1, Latest-2023)/ CHEM103 Final Exam / CHEM 103 General Chemistry Final Exam/ CHEM103 General Chemistry Final Exam: Portage Learning |100 % Correct Q & A|

Exam
CHEM 103 Final Exam (Version-1,
Latest-2023)/ CHEM103 Final Exam
/ CHEM 103 General Chemistry Final
Exam/ CHEM103 General Chemistry
Final Exam: Portage Learning |100
% Correct Q & A|

Final Exam - Requires Respondus LockDown Browser + Webcam



Question 1
Complete the two problems below:
1. Convert 0.0000726 to exponential form and explain your answer.


2. Convert 5.82 x 103 to ordinary form and explain your answer.
Answer:
1. Convert 0.0000726 = smaller than 1 = negative exponent, move decimal 5
places = 7.26 x 10-5
2. Convert 5.82 x 103 = positive exponent = larger than 1, move decimal 3
places = 5820


Question 2
Do the conversions shown below, showing all work:
1. 358oK = ? oC
2. 53oC = ? oF
3. 158oF = ? oK

, Answer:


1. 358oK - 273 = 85 oC o
K → oC (make smaller)
-273
2. 53oC x 1.8 + 32 = 127.4 oF o
C → oF (make larger) x
1.8 + 32
3. 158oF - 32 ÷ 1.8 = 70 + 273 = 343 oK o
F → oC → oK


Question 3
Show the calculation of the number of moles in the given amount of the
following substances. Report your answerto 3 significant figures.
1. 12.0 grams of Ca3(PO4)2