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CHEM 103 FINAL EXAM WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+|NEWEST|GUARANTEED PASS |LATEST UPDATE$20.49
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CHEM 103 FINAL EXAM WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+|NEWEST|GUARANTEED PASS |LATEST UPDATE
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Course
CHEM 103
Institution
CHEM 103
CHEM 103 FINAL EXAM
WITH ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED ANSWERS
|FREQUENTLY TESTED QUESTIONS
AND SOLUTIONS |ALREADY GRADED
A+|NEWEST|GUARANTEED PASS
|LATEST UPDATECHEM 103 FINAL EXAM
WITH ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED ANSWERS
|FREQUENTLY TESTED Q...
CHEM 103 FINAL EXAM 2024-2025
WITH ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED ANSWERS
|FREQUENTLY TESTED QUESTIONS
AND SOLUTIONS |ALREADY GRADED
A+|NEWEST|GUARANTEED PASS
|LATEST UPDATE
Protons and neutrons are make of quarks.
True
The chemical symbol for gold is Ag.
False
If 300 students, in a college of 6000, own a cat; then 3.0% are cat owners.
False
The number 3020 has 3 significant digits.
True
The isotopes: Vanadium-50 and vanadium-51 both have 23 electrons
True
All number have some uncertainty associated with them.
False
The rusting of a Nail is both a chemical and a physical change.
True
1|Page
,A positive temperature value in the Fahrenheit scale can sometimes be converted to a negative number
in the Celsius scale.
True
My wooden floor is 32.0 ft wide and 30.0 ft long. I want to sand and refinish the floor. This will cost
$45.00 per square meter. Recall that there are 3.381 ft in 1 meter.
3,779.14
Please convert 475.0 oF to Kelvin temperature.
519.261
A piece of metal was found on the side of the road. The metal was put on a balance and found to have a
mass of 23.45 g. The volume was determined by placing the metal into a 25.00 ml column of oil, which
was displaced to 27.00 mL. What was the Density of this metal?
11.73
What is the formula weight of Cysteine? ___________
121.16
What is the wt of 1 mole of sulfur atoms?
32.06
Cysteine, NH2CH2SHCOOH, is a proteinogenic amino acid, which means it is included in the formation of
proteins. This sulfur containing amino acid is abundant in human hair and in high end hair care products.
Given a 35.00 g sample of cysteine, calculate the grams of S atoms present.
9.26
What is the formula weight of Ethane, CH3-CH3? ___________
30.97
How many carbon atoms are present in (4.50x10^1) g of ethane, CH3CH3?
Hint. 1 mole of any substance contains 6.022x1023 units of that substance.
1.81x10^24
What isotope has the symbol 27Al ? (Calcium-42, Iron-56, Aluminum-27 or Aluminum-26.98)
______ 27Al has how many protons? (13 protons, 14 protons, 27 protons or 40 protons)______ 27Al has
how many neutrons? (13 neutrons, 14 neutrons, 27 neutrons or 40 neutrons)______ 27Al has how many
electrons? (13 electrons, 14 electrons, 27 electrons or 40 electrons)______One atom of 27Al has a mass
of what? (13 u, 14 u, 27 u or 40 u)______
Al27, 13 Protons, 14 Neutrons, 13 Electrons, 27 U
Which of these is characteristic of a homogeneous solution?
2|Page
,There is no variation of physical properties throughout the solution.
If an atom is electrically neutral, then this means...
There must be equal numbers of electrons and protons.
What is the correct unit relationship between milligrams and kilograms?
10^6mg = 1 kg
Which are the correct symbols for Silver, Chromium, Manganese and Iron
Ag, Cr, Mn and Fe
which of the following is an extensive physical property of matter?
Weight
Which correctly list the mass units from smallest to largest?
ug < mg < cg < g
Glycine is the simplest amino acid found in proteins. If the formula weight is 75.07 u, and it is
represented by the chemical formula C2HxNO2. What number does the x stand for in the formula.
C2H5NO2
Which statement correctly describes the nucleus of the atom?
The nucleus contains all of the positive charge of the atom.
What would be true about 2.5 moles of glucose C6H12O6
There would be 30 moles of Hydrogen atoms
Which one of these numbers is correctly expressed in scientific notation?
−4.53x10^−2
The mass value 1999.69 grams, correctly rounded to three significant figures, should be written as:
2.00 x 10^3 grams
One mole of lithium atoms would have the mass of ...
6.941 grams
Which of the following statements about the three temperature scales, (Fahrenheit, Celsius and Kelvin)
is NOT correct?
Absolute zero on the Celsius scale is −473.15 Co.
Which number has 4 significant digits?
4.390
3|Page
, One mole of boron atoms would have the mass of ....
10.81 grams
Which isotope has the same number of neutrons as C55r.
60Cu
What is the formula wt of 1 mole of magnesium oxide, MgO
40.31 g
What type of molecule is HBr??
HBr is a hetero-diatomic molecule.
In the radioactive decay cycle of Thorium, how many protons and how many neutrons are lost when
Thorium-232 decays to Lead-206?
8 protons and 18 neutrons
an isotope of a particular element has a mass number equal to twice the atomic number. The neutral
atom contains 25 electrons. The isotope must be...
Manganese-50
Bromine is a reddish-brown fuming liquid with a density of 3.10 g/L. It can freeze solid at -7.2 oC and it
reacts very rapidly with potassium to form KBr. Which is one physical and one chemical property?
Freezes at -7.2 oC and reacts very rapidly with potassium to form KBr.
Which measurement below has the fewest significant figures?
1.20 x 104 g
Which isotope has the same number of protons as neutrons?
Neon-20
What is the name of the element whose chemical symbol is As?
Arsenic
Using the ruler below the fish, which is the correct measurement of the length of the fish?
53.5 cm
If two neutron atoms are isotopes of the same element, then how are they different from each other?
They have different numbers of neutrons.
A calorie is a measure of:
heat
Which isotope has 79 protons and 118 neutrons.
4|Page
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