WA 1 Dearing
docx
keyboard_arrow_up
School
Thomas Edison State College *
*We aren’t endorsed by this school
Course
121
Subject
Chemistry
Date
Apr 3, 2024
Type
docx
Pages
3
Uploaded by MagistratePantherMaster1075
Name: Eric Dearing
College ID: 0550796
Thomas Edison State College
General Chemistry I with Labs (CHE-121)
Section no.:
Semester and year: May 2014
Written Assignment 1: Introduction and Measurement
Answer all assigned questions and problems, and show all work. 1.
Do the following statements describe chemical or physical properties? (10 points)
a.
Oxygen gas supports combustion. - Chemical
b.
Fertilizers help to increase agricultural production. - Chemical
c.
Water boils below 100°C on top of a mountain. - Physical
d.
Lead is denser than aluminum. - Physical
e.
Uranium is a radioactive element. - Physical
(Reference: Chang 1.11)
2.
Classify each of the following as an element, a compound, a homogeneous mixture, or a heterogeneous mixture: (7 points)
a.
water from a well - Compound
b.
argon gas - Element
c.
sucrose - Compound
d.
air – Homogenous mixture
e.
dirt – Heterogeneous Mixture
f.
a rusty iron nail - Heterogeneous
g.
ozone - Compound
3.
Express the answers to the following calculations in scientific notation: (12 points)
a.
145.75 + (2.3 × 10
–1
) = 145.98, 2.3 x 10
–1 = 0.23, 145.75 + 0.23 = 145.98
b.
79,500 ÷ (2.5 × 10
2
) = 318, 2.5 × 10
2
= 250, 79,500 ÷ 250 = 318
c.
(7.0 × 10
–3
) – (8.0 × 10
–4
) = 7.0 x 10
–3
– 0.8 × 10
–3
= 6.2 x 10
–3
= 0.0062
d.
(1.0 × 10
4
) × (9.9 × 10
6
) = (1.0 × 9.9) = (1.0 × 9.9)(10
4+6
= 10
10
) = 9.9 x 10
10
=99,000,000,000
(Reference: Chang 1.31)
1
4.
What is the number of significant figures in each of the following measurements? (8 points)
a.
4867 mi, 4 significant figures
b.
56 mL, 2 significant figures
c.
60,104 ton, 5 significant figures
d.
2900 g, ambiguous case, number may contain 4 (2.900x10
3
), 3 (2.90x10
3
), 2 (2.9x10
3
)
e.
40.2 g/cm
3
, 3 significant figures
f.
0.0000003 cm, 1 significant figures
g.
0.7 min, 1 significant figures
h.
4.6 × 10
19
atoms, 2 significant figures
(Reference: Chang 1.33)
5.
Express the results in the proper number of significant figures. (12 points)
a.
5.6792 m + 0.6 m + 4.33 m
5.6792 m + 0.6 m = 6.2792 m + 4.33 = 10.6, 3 significant figures
b.
3.70 g – 2.9133 g = 0.79 g, 2 significant figures
c.
4.51 cm × 3.6666 cm = 16.54 cm, 4 significant figures
d.
(3 × 10
4
g
+ 6.827g)/(0.043 cm
3
– 0.021 cm
3
), 1g = 1 cm
3
30,000 g + 6.827 g =30,006.827 g
0.043 cm
3 – 0.021 cm
3
= 0.022 cm
3
6.827 ÷ 0.022 = 310.318 g, 6 significant figures
(Reference: Chang 1.35)
6.
Carry out the following conversions: (16 points)
a.
22.6 m to dm, 1m=10dm, 22.6x10= 226 dm
b.
25.4 mg to kilograms, 1 million mg = 1 kg - or - 1 kg = 1.0 x 10
-6
25.4 mg x 10
-6
= 2.54x10
-5 kg or 0.0000254 kg
c.
556 mL to liters = 1000 ml = 1 liter, 556 ÷ 1000 = .556 liters
d.
10.6 kg/m
3
to g/cm
3,
, 1000 kg/m
3
= 1 g/cm
3
, 10.6 ÷ 1000 = 0.0106 g/cm
3
(Reference: Chang 1.39)
7.
The average speed of helium at 25°C is 1255 m/s. Convert this speed to miles per hour (mph). (4 points)
1255 x 3600 (seconds in hour) = 4,518,000 ÷ 1609.344 (1 mile = 1609.344 meters)
2807.355047 mph or 2807.4 mph
(Reference: Chang 1.41)
2
8.
How many minutes does it take light from the sun to reach Earth? (The distance from the sun to Earth is 93 million miles; the speed of light is 3.00 × 10
8
m/s)
(4 points)
Convert miles to meters 9.3x10
7
x 1.61 = 149,730,000x10
8
or round up 1.50x10
8
Convert m/s to m/min 3.00x10
8
x60 seconds = 1.8x10
10
/ m/hr/60 = 3.00x10
6
Convert m/hr to km/hr, 3.00x10
6
/ 1000 = 300,000
R=D/T, D = 1.50x10
8
/ T = 300,000 km/hr = 500 seconds / 60 = 8.33 minutes or 8min 20 sec
(Reference: Chang 1.43)
9.
Normal body temperature is 78.0°F. Calculate this temperature in degrees Celsius and Kelvin. (4 points)
(78F-32F)=46F X 5C/9C=230/9=25.55555556 or 25.5C
K = (25.5C + 273.15C) = 298.65K
10.
Bromine is a reddish-brown liquid. Calculate its density (in g/mL) if 586 g of the substance occupies 188 mL. (4 points)
d=m/V, density g/ml = 586 g / 188 ml = 3.12 g/ml is the density of Bromine.
(Reference: Chang 1.21)
11. Aluminum is a lightweight metal (density = 2.70 g/cm
3
) used in aircraft construction, high-voltage transmission lines, beverage cans, and foils. What is its density in kg/m
3
? (4 points)
1000 kg in 1g/cm
3
, 2.70 g/cm
3
1000 = 2700 kg/m
3
12. Calculate the mass of a cube of platinum of edge length 0.040 mm (the density of platinum = 21.4 g/cm
3
). (5 points)
m=d x V, V = 0.040mm = 0.004cm, 0.004
3
= V 6.4x10
-8
d 21.4 g/cm
3
x V 6.4x10
-8
= 1.37x10
-6
(Reference: Chang 1.57)
13. A piece of silver (Ag) metal weighing 194.3 g is placed in a graduated cylinder containing 242.0 mL of water. The volume of water now reads 260.5 mL. From these data calculate the density of silver in units of g/mL. (5 points)
d=m/V, 260.5ml-242mL = 18.5mL, m 194.3g / V 18.5 = 10.5 g/mL
(Reference: Chang 1.61)
14. Cholesterol in blood is measured in milligrams of cholesterol per deciliter of blood. If the average adult has 6.0 liters of blood, how many grams of cholesterol would be in the blood of an average adult with a cholesterol reading of 185 mg/dL? Density of blood = 1.020 g/mL. (5 points)
1L = 10 dl, 6.0L = 60dL x185 mg/dL = 11,100 mg/dL /
1000 = 11.1g of cholesterol
3
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
Related Documents
Related Questions
1. A friend claims that a metric ton is more than twice the mass of an English ton because a
kilogram is more than twice the mass of a pound. Make a quantitative argument in support of or
against your friend's claim. (1 page)
2. Upgraded U.S. fuel economy standards formalized in 2012 call for a 54.5 mile-per-galloon
average for new cars and light trucks in 2025. A politician opposing this increase claims it will
save "only a drop in the bucket" compared with the 2014 fleet average of about 23 mpg.
Formulate a counterargument showing that the increase - once the entire fleet reaches 54.5 mpg
- consumption rate from its 2014 value of about 375 million gallons per day. State any additional
assumptions you make.
arrow_forward
101 Chem101
b Search results for 'Using the infor x
B Brainly.com - For students. By stu X
G Using the information in the tab
+
->
A app.101edu.co
I Apps
y! email
b bartleby
B Brainly.com - For st. = Google Docs M gmail
O eagle adv
H school email
S canvas
m Monthly | My Classes
101 Chem101
general
E Reading list
Question 19 of 44
Submit
Using the information in the table, the rate law for the reaction A(g) + 3 B(g) →
C(g) + 2 D(g) is
Rate
[A], (M)
[B], (M)
(M/s)
A) Rate =
k[A][B]³
1.25
0.100
0.850
B) Rate =
k[B]
C) Rate = k[A][B]
1.25
0.300
2.55
D) Rate = k[A][B]²
3.75
0.200
5.10
2:47 PM
P Type here to search
67°F Clear
7/19/2021
近
arrow_forward
101 Chem101
You are given a 1.25 gram mixtı x b My Questions | bartleby
Get Homework Help With Cheg × +
app.101edu.co
M
Apps
G
M Gmail
YouTube
Maps
a AMAZON
Translate
Gflights
USCIS
ъ ВАТERBLY
C CHEGG > KATAPULK CUBA
SUPERMARKET23
Essay Writing Ser...
G calculator - Googl...
Reading List
Question 12 of 20
Submit
You are given a 1.25 gram mixture of calcium nitrate and calcium
chloride. You dissolve this mixture in 200.0 mL of water and add an
excess of 0.300 M silver nitrate. You collect and dry the white
precipitate which forms and find it has a mass of 0.535 grams.
Calculate the percent calcium chloride by mass in the original mixture.
| %
1
2
4
C
7
8
9
+/-
х 100
+
LO
arrow_forward
Perform the calculation below (Equation 1) to the correct number of significant figures? (Show
your work.)
(??.????−?.???) divided by
?.?
=? Equation 1
arrow_forward
C
arrow_forward
Pavilion
HP TrueVision HD
4 Texas Workfor
Mc Homework X
W. College Physic
hnical App
AN Careers
J/eagleonline.hccs.edu/courses/188795/assignments/3601808
Avaliabie diler reD 4 dl 10.17 dim
Constants | Periodic Table
Compiete tne fourtn row.
Express your answer using two
significant figures.
Complete the following table by calculating the
missing entries and indicating whether the solution
is acidic or basic.
[H+]
[OH]]
pH pOH
Acidic or
basic?
ΑΣφ
7.4x10-3
[H*]
3.3x10-10
M
Submit
Request Answer
8.25
5.73
DOL
ADVANCEDA
fo
f2.
ho
4+
Is
10
insert
arrow_forward
Twelve (12) samples were weighed on a balance, their combined mass is 13.62 g.
With the appropriate number of significant digits, what is the average mass of each sample?
1.1 g
1.14 g
1.135 g
1.1350 g
it is impossible to determine with the given information
arrow_forward
...Lc ו
Colors | Georgia Gw...
Beautiful Free Imag...
☺ Make Images, Vide...
O MEASUREMENT AND MATTER
1/3
Setting up the math for a one-step quantitative problem
Lindsey
Suppose you need 6.5 m of Grade 70 tow chain, which has a diameter of 3/8" and weighs 2.16 kg/m, to tow a car. How would you calculate the mass of this
much chain?
Set the math up. But don't do any of it. Just leave your answer as a math expression.
Also, be sure your answer includes all the correct unit symbols.
mass of chain =
回山国
arrow_forward
?
1. 03
2. DMS
Br₂, DCM
KMnO4,
Hot
?
X2
arrow_forward
101 Chem101
b My Questions | bartleby
C Having A Hard Time With Thes X G Choose the statement that exp X
101 Chem101
x +
app.101edu.co
M
Apps
G
M Gmail
YouTube
Maps
а АМAZON
Translate
Gflights
USCIS
ъ ВАТERBLY
C CHEGG > KATAPULK CUBA
SUPERMARKET23
Essay Writing Ser...
G calculator - Googl...
Reading List
Question 13 of 22
Submit
Choose the statement that explains the difference between the first ionization
energy of first ionization energy of F, and the first ionization energy of atomic F.
A) The first ionization energy of atomic F is
lower than the first ionization energy of F,. This
difference is observed because the atomic p
orbitals of F are lower energy than bonding
orbitals of F,.
B) The first ionization energy of atomic F is
lower than the first ionization energy of F,. This
difference is because the bonding orbitals of
the atomic species are lower energy than the
bonding orbitals of the diatomic species.
C) The first ionization energy of atomic F is
greater than the first…
arrow_forward
e east.cengagenow.com
Chemistry I
C OWLV2 I Online teaching and learning resource from C.
b Answered: The number 9.469709 rounded to 2. | bart.
G 54.0
(References]
Use the References to access important values if needed for this question.
It is often necessary to do calculations using scientific notation when working chemistry problems. For practice, perform each of the following calculations.
(9.40×10“)(4.27×10$) =
5.00x104
9.45x104
(9.40x10 )(6.46×10)
(1.00x108)(5.00x1o4)
Submit Answer
Try Another Version
5 item attempts remaining
Cengage Learning Cengage Technical Support
arrow_forward
I don’t understand these two questions.(66 and 67)
arrow_forward
Give detailed Solution..don't give Handwritten answer..don't use Ai for answering this
arrow_forward
Instructions for this problem say, "Solve each problem and report your answer to correct significant figure and units. Remember that units multiply, divide, add, subtract, and simplify just like variables."
(3.1 x 10^4 nm^2)^1/2
How do I solve with a half exponent? Image of my attempt attached.
arrow_forward
[References]
It is sometimes necessary to take powers or roots to solve chemistry problems.
Take
powers and roots as needed on your calculator to complete the following:
a = 3.964
a =
b = 772
% =
c= 2.001.28
C =
d1.02
= 2.19
d =
Submit Answer
Retry Entire Group
4 more group attempts remaining
Cengage Learning | Cengage Technical Support
arrow_forward
Done <
AA
www-awu.aleks.com
MEASUREMENT
Multiplication and division of...
Decide whether each proposed multiplication or division of measurements is possible. If it is possible, v
last column of the table.
proposed
multiplication or division
Is this
possible?
result
x10
(2.0 mg) - (0.020 g) = ?
yes
ola
no
Ar
yes
(4.0 g) · (6.0 mL) = ?
no
yes
(2.4 em) · (0.30 m) = ?
%3D
no
Explanation
Check
© 2021 McGraw-Hill Education. All Rights Reserved.
arrow_forward
A 11 oz. can of soda contains 26 mg of sodium. How many atoms of sodium are found per mL of the solution? 1 oz. = 29.57 mL
Report your answer using scientific notation (e.g., 1.23e15). Report your answer with two significant figures. Do not report units.
arrow_forward
Complete the table
arrow_forward
tion 24 of 27
An empty beaker weighs 31.99 g.31.99 g.
When completely filled with water, the beaker and its contents have a total mass of 405.55 g.405.55 g. What volume does the beaker hold? Use ?=1.00 g/mLd=1.00 g/mL as the density of water.
volume:
mLmL
How much would the beaker and its contents weigh if it was completely filled with mercury? The density of mercury is ?=13.5 g/mL.d=13.5 g/mL.
total mass:
arrow_forward
Inbc X
(531 X
Con X
I Bala X
Ans X
Inbc X
CHE X
101 Che X
С Ч-С х
b My x
Unk X
Sea X
E I ma X
app.101edu.co/#
Bryant's Gmail
Cascadia Canvas Lo... T GSBA Scholarship L...
HOMEGROWN TRA...
Learn Touch Typing...
C The Science of Well...
Investor360° ® Login
ClickUp
Reading list
>>
Question 7 of 40
Submit
Which of the following compounds can form intermolecular hydrogen bonds?
A) CH4
B) H2Se
C) NH3
D) H2
E) All of these compounds can form hydrogen
bonds.
10:36 AM
e Type here to search
64°F
小
8/26/2021
(8)
arrow_forward
What were the main results found in this experiment? Include both quantitative results (i.e. important calculated values, including percent error) and qualitative results (i.e. important properties that were investigated).
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you

Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning


Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning

Introduction to General, Organic and Biochemistry
Chemistry
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Cengage Learning

Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
Related Questions
- 1. A friend claims that a metric ton is more than twice the mass of an English ton because a kilogram is more than twice the mass of a pound. Make a quantitative argument in support of or against your friend's claim. (1 page) 2. Upgraded U.S. fuel economy standards formalized in 2012 call for a 54.5 mile-per-galloon average for new cars and light trucks in 2025. A politician opposing this increase claims it will save "only a drop in the bucket" compared with the 2014 fleet average of about 23 mpg. Formulate a counterargument showing that the increase - once the entire fleet reaches 54.5 mpg - consumption rate from its 2014 value of about 375 million gallons per day. State any additional assumptions you make.arrow_forward101 Chem101 b Search results for 'Using the infor x B Brainly.com - For students. By stu X G Using the information in the tab + -> A app.101edu.co I Apps y! email b bartleby B Brainly.com - For st. = Google Docs M gmail O eagle adv H school email S canvas m Monthly | My Classes 101 Chem101 general E Reading list Question 19 of 44 Submit Using the information in the table, the rate law for the reaction A(g) + 3 B(g) → C(g) + 2 D(g) is Rate [A], (M) [B], (M) (M/s) A) Rate = k[A][B]³ 1.25 0.100 0.850 B) Rate = k[B] C) Rate = k[A][B] 1.25 0.300 2.55 D) Rate = k[A][B]² 3.75 0.200 5.10 2:47 PM P Type here to search 67°F Clear 7/19/2021 近arrow_forward101 Chem101 You are given a 1.25 gram mixtı x b My Questions | bartleby Get Homework Help With Cheg × + app.101edu.co M Apps G M Gmail YouTube Maps a AMAZON Translate Gflights USCIS ъ ВАТERBLY C CHEGG > KATAPULK CUBA SUPERMARKET23 Essay Writing Ser... G calculator - Googl... Reading List Question 12 of 20 Submit You are given a 1.25 gram mixture of calcium nitrate and calcium chloride. You dissolve this mixture in 200.0 mL of water and add an excess of 0.300 M silver nitrate. You collect and dry the white precipitate which forms and find it has a mass of 0.535 grams. Calculate the percent calcium chloride by mass in the original mixture. | % 1 2 4 C 7 8 9 +/- х 100 + LOarrow_forward
- Perform the calculation below (Equation 1) to the correct number of significant figures? (Show your work.) (??.????−?.???) divided by ?.? =? Equation 1arrow_forwardCarrow_forwardPavilion HP TrueVision HD 4 Texas Workfor Mc Homework X W. College Physic hnical App AN Careers J/eagleonline.hccs.edu/courses/188795/assignments/3601808 Avaliabie diler reD 4 dl 10.17 dim Constants | Periodic Table Compiete tne fourtn row. Express your answer using two significant figures. Complete the following table by calculating the missing entries and indicating whether the solution is acidic or basic. [H+] [OH]] pH pOH Acidic or basic? ΑΣφ 7.4x10-3 [H*] 3.3x10-10 M Submit Request Answer 8.25 5.73 DOL ADVANCEDA fo f2. ho 4+ Is 10 insertarrow_forward
- Twelve (12) samples were weighed on a balance, their combined mass is 13.62 g. With the appropriate number of significant digits, what is the average mass of each sample? 1.1 g 1.14 g 1.135 g 1.1350 g it is impossible to determine with the given informationarrow_forward...Lc ו Colors | Georgia Gw... Beautiful Free Imag... ☺ Make Images, Vide... O MEASUREMENT AND MATTER 1/3 Setting up the math for a one-step quantitative problem Lindsey Suppose you need 6.5 m of Grade 70 tow chain, which has a diameter of 3/8" and weighs 2.16 kg/m, to tow a car. How would you calculate the mass of this much chain? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols. mass of chain = 回山国arrow_forward? 1. 03 2. DMS Br₂, DCM KMnO4, Hot ? X2arrow_forward
- 101 Chem101 b My Questions | bartleby C Having A Hard Time With Thes X G Choose the statement that exp X 101 Chem101 x + app.101edu.co M Apps G M Gmail YouTube Maps а АМAZON Translate Gflights USCIS ъ ВАТERBLY C CHEGG > KATAPULK CUBA SUPERMARKET23 Essay Writing Ser... G calculator - Googl... Reading List Question 13 of 22 Submit Choose the statement that explains the difference between the first ionization energy of first ionization energy of F, and the first ionization energy of atomic F. A) The first ionization energy of atomic F is lower than the first ionization energy of F,. This difference is observed because the atomic p orbitals of F are lower energy than bonding orbitals of F,. B) The first ionization energy of atomic F is lower than the first ionization energy of F,. This difference is because the bonding orbitals of the atomic species are lower energy than the bonding orbitals of the diatomic species. C) The first ionization energy of atomic F is greater than the first…arrow_forwarde east.cengagenow.com Chemistry I C OWLV2 I Online teaching and learning resource from C. b Answered: The number 9.469709 rounded to 2. | bart. G 54.0 (References] Use the References to access important values if needed for this question. It is often necessary to do calculations using scientific notation when working chemistry problems. For practice, perform each of the following calculations. (9.40×10“)(4.27×10$) = 5.00x104 9.45x104 (9.40x10 )(6.46×10) (1.00x108)(5.00x1o4) Submit Answer Try Another Version 5 item attempts remaining Cengage Learning Cengage Technical Supportarrow_forwardI don’t understand these two questions.(66 and 67)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax

Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning


Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning

Introduction to General, Organic and Biochemistry
Chemistry
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Cengage Learning

Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax