FINAL EXAM
If a solution has a temperature of 255 K, what is its temperature in degrees Celsius? A) 491°C B) 528°C C) 123.9°C D) 355°C E) -18°C
-18°C
What is the volume (in cm3) of a 43.6 g piece of metal with a density of 2.71 g/cm3? A) 16.1 B) 19.5 C) 0.425 D) 6.65 E) none of the above
16.1
Saline solutions (NaCl in water) used to deliver intravenous drugs are 0.89%(w/v). What mass of NaCl would be needed to prepare 450 mL of such a solution? A) 4 x 102 g B) 0.89 g C) 4.0 g D) 5.1 g
4.0 g
How many minutes are in a 30 day month? [Assume exactly 24 hours in a day] A) 7.20 × 10^2 minutes B) 4.32 × 10^4 minutes C) 2.59 × 10^6 minutes D) 3.11 × 10^7 minutes
4.32 × 10^4 minutes
A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the balloon contain at 1.35 atm and 253 K? A) 22.2 L B) 87.5 L C) 11.4 L D) 45.0 L E) 58.6 L
45.0 L
Calculate the number of moles of ZnCl2, in 180.0 mL of 0.330 M solution. A) 5.94 x 10^2 mol B) 1.83 mol C) 0.545 mol D) 59.4 mol
5.94 x 10^2 mol
How many valence electrons are there in a sulfur atom? A) 2 B) 3 C) 5 D) 6
6
What is the mass of salt in a 400 gram-sample of salt water which is 1.50% (w/w) salt? A) 1.50 g B) 2.67 g C) 3.00 g D) 6.00 g
6.00 g
How many hydrogen atoms would be needed to complete the following structure? C = C - N - C
7
Which of the following is the smallest number? A) 5 × 10^3 B) 3 × 10^4 C) 2 × 10^-5 D) 7 × 10^-6
7 × 10^-6
To what temperature must a balloon, initially at 25°C and 2.00 L, be heated in order to have a volume of 6.00 L? A) 993 K B) 403 K C) 75 K D) 655 K E) 894 K
894 K
Which of the following is an acceptable way to represent dinitrogen monoxide? A) N2O B) NITRIC OXIDE C) NO2 D) BOTH A AND B
N2O
Sodium chlorate, an ingredient in many common herbicides, has sodium, chlorine and oxygen atoms in the ratio 1:1:3, respectively. What is the formula unit for sodium chlorate? A) NaCO3 B) SoClO3 C) NaClO3 D) none of these
NaClO3
Low electronegativities are associated with which type of elements? A) Metals B) Metalloids C) Noble Gases D) Non Metals
Noble Gases
Total nitrogen in the diet must provide enough nitrogen for the synthesis of
Nonessential amino acids and any other synthesized nitrogen-containing compounds.
Choose the compound from the list below. A) silver B) carbon dioxide C) helium D) tin E) sodium
carbon dioxide
The factor 0.01 corresponds to which prefix? A) deka B) deci C) centi D) milli
centi
Which of the following is a chemical substance than can be broken down into another substance? A) element B) homogeneous mixture C) heterogeneous mixture D) compound
compound
What is the name of CuSO4? A) copper sulfate B) copper (I) sulfate C) copper (II) sulfate D) copper (II) sulfite E) copper (IV) sulfate
copper (II) sulfate
How many significant figures are there in the answer to the following problem? (9.992 × 3.200) + 0.610 = ? A) one B) two C) three D) four
four
Which of the following is not a base unit of the metric system? A) g B) g/L C) L D) All are base units.
g/L
The number of valence electrons of a representative element is related to which of the following? A) atomic number B) atomic weight C) group number D) period number
group number
Identify the element whose ion only exists as 1+. A) barium B) lithium C) lead D) nitrogen E) radon
lithium
A chemical change A) occurs when methane gas is burned. B) occurs when paper is shredded. C) occurs when water is vaporized. D) occurs when salt is dissolved in water. E) occurs when powdered lemonade is stirred into water.
occurs when methane gas is burned.
A physical change A) occurs when iron rusts. B) occurs when sugar is heated into caramel. C) occurs when glucose is converted into energy within your cells. D) occurs when water is evaporated. E) occurs when propane is burned for heat.
occurs when water is evaporated.
Fill in the blank with the appropriate number (0, 1 ,2 ,3 etc.). Consider the following calculation: 143.321 g + 17.89 g + 100.1 g 261.311 g The answer should be round to _____________________ decimal places.
one
What are the horizontal rows of the periodic table called? A) cycles B) periods C) groups D) columns
periods
Give the name for P4O5. A) phosphorus(IV) oxide B) diphosphorus pentoxide C) phosphorus oxide D) phosphorus (V) oxide E) tetraphosphorus pentoxide
phosphorus (V) oxide
When an ionic compound forms between potassium and oxygen atoms? A) potassium donates electrons to oxygen. B) oxygen attains a positive charge and potassium a negative charge. C) oxygen donates electrons to potassium. D) both a and b
potassium donates electrons to oxygen.
Identify the charges of the protons, neutrons, and electrons. A) protons +1, neutrons 0, electrons -1 B) protons 0, neutrons -1, electrons 0 C) protons -1, neutrons -1, electrons 0 D) protons 0, neutrons 0, electrons 0 E) protons +1, neutrons +1, electrons +1
protons +1, neutrons 0, electrons -1
Choose the pure substance from the list below. A) coffee B) a casserole C) water D) salt water E) apple juice
water
In which of the following processes does the energy of the water decrease? A) water freezes B) steam condenses to the liquid C) water evaporates D) water sublimes E) both a and b
water freezes
How many moles of sulfur are there in a 0.685-g sample of sulfur? A) 0.0214 mol B) 46.8 mol C) 22.0 mol D) 32.1 mol
0.0214 mol
Which of the following set-ups will allow you to calculate the cost of fruit in dollars per gram, if the price is given as 0.79 dollars per pound?
0.79 dollars x 2.20 lb lb 1000 g
Aluminum has a density of 2.70 g/ mL. What volume is occupied by a block of aluminum that weighs 4.32 kg? A) 0.000625 mL B) 0.625 mL C) 1.60 mL D) 1.60 L
1.60 L
The prefix centi-denotes what fraction of a base unit? A) 1/10 B) 1/100 C) 1/1000 D) 100
1/100
A sample of gas initially has a volume of 859 mL at 565 K and 2.20 atm. What pressure will the sample have if the volume changes to 268 mL while the temperature is increased to 815 K? A) 10.2 atm B) 9.83 atm C) 15.3 atm D) 6.53 atm E) 1.05 atm
10.2 atm
A person drinks 1900 g of water, H2O, per day. How many moles of water did they consume? A) 3.4 x 10^4 mol B) 0.009 mol C) 105 mol D) 18.02 mol
105 mol
What is the formula weight of ibuprofen, C13H18O2? A) 29.0 g/mol B) 206.3 g/mol C) 289.4 g/mol D) 377.7 g/mol
206.3 g/mol
A particular model of hybrid car can travel 53.0 miles/gallon of gas. What is this fuel efficiency expressed in the metric system? [1 quart = 0.946 L; 1 mile = 1.609 km] A) 8.71 km/L B) 20.2 km/L C) 22.5 km/L D) 90 km/L
22.5 km/L
How many bonds does a phosphorus atom typically form? A) 2 B) 3 C) 4 D) 5 E) 6
3
Aldose contains what functional group?
Aldehyde
Structure B is classified as a(n)
Alkane
C4 H8
Alkene
Structure C is classified as a(n)
Alkene
Structure D is classified as a(n)
Alkyne
Which of the following is could not be used to represent the same compound?
All could represent the same compound.
Structure A is classified as a(n)
Aromatic Compound
Which of the following best describes the relationship of molecules in a liquid with those in a gas at the same temperature? A) Molecules in the liquid are much closer together than those in the gas. B) Molecules in the liquid have less kinetic energy than those in the gas. C) Molecules in the liquid are moving faster than those in the gas on the average. D) Both a and b are correct. E) All of the above are correct.
Both a and b are correct.
The following equation is an expression of ______________ law. P1 x V1 = P1 x V2 A) Boyle's B) Combined gas C) Gay-Lussac's D) Charles' E) Dalton's
Boyle's
The effect of increasing the temperature on the volume of a gas can be calculated by using _________ law. A) Boyle's B) Combined gas C) Gay-Lussac's D) Charles' E) Dalton's
Charles'
All except which of the following is a characteristics of all monosaccharides?
Contain a six-membered ring.
Which of the following contains a sulfur atom as part of the side chain?
Cysteine
Carbohydrates that contain two sugar units chemically linked together are called
Disaccharides
Which of the following statements is generally true about electronegativity? A) Electronegativity decreases as we move left to right and decreases as we move top to bottom. B) Electronegativity decreases as we move left to right and increases as we move top to bottom. C) Electronegativity increases as we move left to right and decreases as we move top to bottom. D) Electronegativity increases as we move left to right and increases as we move top to bottom.
Electronegativity increases as we move left to right and decreases as we move top to bottom.
Which of the following is the appropriate ending for the name of an alkene?
Ene
The following compound is classified as an alkane.
FALSE
The following compound would be correctly classified as an alkyne.
FALSE
The following molecule contains two functional groups, an alkane group and an alkyne.
FALSE
The following representation accurately depicts the structure of a peptide group.
FALSE
The following two substances would have the same physical properties.
FALSE
The variation in pressure with temperature is defined by ____________________ law. A) Boyle's B) Combined gas C) Gay-Lussac's D) Charles' E) Dalton's
Gay-Lussac's
What monosaccharides are present in lactose that's present in milk?
Glucose + Galactose
Which of the following is an analog of starch in animals?
Glycogen
The linkage between the two monosaccharide units of a disaccharide is a
Glycosidic Linkage
In the compound shown below, which atoms, if any, do not form the correct number of covalent bonds?
H, C AND O.
A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.07 g/mL, 1.81 g/mL, 1.93 g/mL, and 1.75 g/mL. If the actual value for the density of the sugar solution is 1.75 g/mL, which statement below best describes her results? A) Her results are precise, but not accurate. B) Her results are accurate, but not precise. C) Her results are both precise and accurate D) Her results are neither precise nor accurate. E) It isn't possible to determine with the information given.
It isn't possible to determine with the information given.
Using most common charges, the ionic compound that forms between lithium and sulfur has the formula A) Li2S B) LiS C) LiS2 D) Li2S3
Li2S
Give the formula for lithium nitrate. A) LiNO3 B) Li3NO C) Li3NO3 D) LiNO E) Li(NO3)3
LiNO3
What is the name of a branch on the principal carbon chain that contains three carbon atoms?
Propyl
Consider the structure of the compound shown below. This compound is correctly characterized as:
Saturated
An amino acid can be correctly characterized as:
TRUE
Calcium carbonate is used as a phosphate binder to treat someone with too much phosphate, known as hyperphosphatemia, as can be seen in renal/kidney failure. The formula for this compound is CaCO3. A) TRUE B) FALSE
TRUE
Nonessential amino acids are those which can be synthesized by the body.
TRUE
The compound below is unlikely to exist.
TRUE
The compound is a hydrocarbon and an aromatic compound
TRUE
The compound represented below has the formula Na2S. Na+ S2- Na+ A) TRUE B) FALSE
TRUE
The electron arrangement for Na would be: shell 1: 2 electrons shell 2: 8 electrons shell 3: 1 electron A) TRUE B) FALSE
TRUE
The following compound contains four tetrahedrally arranged atoms.
TRUE
The following represents a balanced chemical equation. Al (NO3)3 (aq) + Na 3PO4 (aq) --> AIPO4(s) + 3NaNO3(aq) A) TRUE B) FALSE
TRUE
The following represents a typical energy diagram. The reaction represented by this energy diagram is endothermic. A) TRUE B) FALSE
TRUE
The line structure for is shown below.
TRUE
The pie chart shown below represents the elemental composition of the human body including water. A) TRUE B) FALSE
TRUE
The primary fuel source for the cells of the nervous system, which is an important energy source for all body tissues is glucose.
TRUE
The two compounds shown below have the same molecular formula.
TRUE
Which monosaccharide has 4 carbon atoms?
Tetrose
The mass of an object is A) the force between the object and the earth. B) a measure of the amount of matter in the object. C) the amount of space the object occupies. D) depends on the location of the object on Earth.
a measure of the amount of matter in the object.
Examine the following representation of a change of state. Which of the following is the correct term for this change? A) freezing B) sublimation C) evaporation D) boiling E) melting
sublimation
The product/s in a chemical reaction are analogous to which of the following? A) a baked cake B) the flour, eggs, chocolate used to bake a cake C) the cake pan. D) the heat of the oven
the flour, eggs, chocolate used to bake a cake.
An ionic bond is best described as A) the sharing of electrons. B) the transfer of electrons from one atom to another. C) the attraction that holds the atoms together in a polyatomic ion. D) the attraction between two nonmetal atoms. E) the attraction between two metal atoms.
the transfer of electrons from one atom to another.
