Exam 1 Review for CHEM 1315: Key Concepts| Questions and solutions | latest 2026.

Exam 1 CHEM 1315 Canvas Review


Please note: The Canvas Exam 1 review has question pools. You will need to find the question you
answered under each gquestion designation below.

Question 1:

Which of the following measurements is the longest? P‘u.:, A ot Te C',(fm Po e

*75x10'nm % ™ = 1.5r*p Sm <
10%m
5x1012
7.5x10%km o
luwr:‘ =- S
T 107 S 4

7.5x10%um e - -
e 7.5 15
7.5x10°mm | oo
1600 M
= 751 "m
75 x107em e
leocin
= 7S5 [0 Tm
The results for a type 1l diabetes general test should indicate a blood sugar (glucose) level below 120
milligrams per deciliter. What is this level expressed in micrograms per milliliter?
12x10 - e
*12x10° = - =
1.2x10° G .
1.2x10° 13 0w 1q /0 jodi T s ISS~ 2
" 3 x ITHAT N TZE T, 0
12x10 AL docomy ] 5 1C Jeoorml_ = £Lig=
ml
Which of the following is the greatest mass?

1000 pg » _L(K - |.CoO l0—3
14 . ¥
*1.000 x 10 kg % joo6 = e * o W


1.000 x 10°cg TZHE lovo * o “q-
- . 1
1.000 x 10 Mg « 10° = ] e00 * 10‘78
/Mfll

Question 2:
A student determined that a sample of sulfur had [x} x 10'° ng of sulfur. This is the same mass as
g of sulfur. Report your answer to the tenths place.
(1= N '

(Formula calculation) CxJx 10 r’j * _,S‘—\- e
1C r\j —_— K/

A student determined that a sample of potassium had [x] x 10* mg of potassium. This is the same mass
as kg of potassium. Report your answer to the thousandths place.
! 4
{Formula calculation) [ % j <10 g ¥ _1%3 < .I__“Efi:— = sz/‘
J ooy lasy CEE

,Exam 1 CHEM 1315 Canvas Review


[x] x 107 Hz is equal to MHz. Report your answer to the tenths place.

.
(Formula calculation) X j « 1o + M v (Vg a -. —_— AU
: J 10 lb 0

A wavelength of [x] x 10® m is equal to nm. Report your answer to the tenths place.

. |D_ am . loqnm . A
(Formula calculation) [Xj
P nm - e

[Naa)

Question 3:

Determine the length of the metal bar and report this length with the correct number of significant
figures.
| 6 o) AL L


20 /7 =
1III['III||I|| LI L L A


e 10 — @ T (
AN hda e
.




B‘G‘Ulf“lc—’-\m F|wfi(_{5 i_;,](-leS \/OU\ luuéu)
igg:

*15.0cm For CeeTam) ( Cam Renb MARKINGS HERE)
15.00cm e trn pJTY
15.000 cm PLus NSDT
LasT 1GLT
bietT u/ /

The result of (3.8621 x 1.5630) - 5.98 is correctly written as:
Aot i
QDL,L.V\.Q .lo .\/hnu,(,«./l"
:)00(5)2 [D O 3(0 4’

- ol of ottewrnad
0.0565
vigflauu_t =
0.05646
0.056462


If two numbers are multiplied together, one that has three significant figures and the other with four
significant figures, the answer should be reported as [a] significant figures.

(dropdown menu question) TueCeE




If two numbers are added together, one which has two digits after the decimal point and the other has
one digit after the decimal point, the answer reported will have [a] digit(s) after the decimal point.
SME
{dropdown menu question) — = -

, Exam 1 CHEM 1315 Canvas Review


Question 4;


How many significant figures should be reported for the following calculation, assuming that these are
measurements obtained during a laboratory experiment?

(5.8 + 4.6} x 24.33 2 'S
46.8


1 8 (0.4 5{244'33 — §3FY
G
*3 - 4o D
0.+ .
. NN
How many significant figures should be reported from the calculation performed from these
measurements recorded in the laboratory?


(12.9 + 11.14) - (124.1 - 108.12)
(3.14 + 16.861)
. 3.0 i
) 280 ~— 10O _ I
3
4 20, 00 2000
5
What value should be reported for the following calculation?

(12.36 + 3.205) (45.21- 39.020)
{0.00249 + 0.00111)
2.6x10°
2.7x10° Qs.s?)((‘,.l‘fl
-2 8" '04
*2.68 x 10°
2.677x10° 6.0036L0
2.6772x10°


Question 5:


Homogeneous mixtures are also known as solutions.

*True