Chem Ch 1-14 Final
What is the molarity of a KCI solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100.0 mL? a. 0.267 M b. 0.150 M c. 0.200 M d. 6.67 M e. 0.100 M
0.150 M
25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is ________. a. 0.212 M b. 0.115 M c. 0.500 M d. 0.390 M e. 0.137 M
0.390 M
How many equivalents are in 0.40 mole of K+? a. 0.40 Eq b. 0.80 Eq c. 0.20 Eq d. 2.0 Eq e. 1.0 Eq
0.40 Eq
Which measurement describes the pressure of a gas? a. 315 K b. 2.5 L c. 0.45 moles
0.45 moles
Which of the following measurements has three significant figures? a. 0.005 m b. 510 m c. 0.510 m d. 5100 m e. 0.051 m
0.510 m
The temperature of a 500 mL sample of gas increases from 150 K to 350 K. What is the final volume of the sample of gas, if the pressure in the container is kept constant?
1170 mL
At constant temperature, a sample of helium at 760 torr in a closed container was compressed from 5.00 L to 3.00 L. What was the new pressure exerted by the helium on its container?
1270 torr
Consider an isotope of sodium with a mass number of 25. The number of neutrons in this isotope of sodium is____. a. 14 b. 25 c. 32
14
A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 K. What will be the gas pressure when the temperature changes to 450 K?
2.1 atm
In the reaction of silver nitrate with sodium chloride, how many grams of silver chloride will be produced from 100 g of silver nitrate when it is mixed with an excess of sodium chloride? The equation for the reaction is below. AgNO3 + NaCl---AgCl + NaNO3
84.4 g
The IUPAC name of this compound is? Cl O /\ /\OH
3-chlorobutanoic acid
What is the IUPAC name for this compound CH3 O CH3-CH-CH2-C-OH
3-methylbutanoic acid
Write 0.000 000 33 in scientific notation.
3.3 x 10^-7
The temperature of liquid nitrogen is -196 C. What is the corresponding reading on the Kelvin scale?
77 K
When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl2, how many moles of aluminum chloride are produced? 2Al + 3Cl2---2AlCl3
4 moles
The measurement 0.000 004 3 m, expressed correctly using scientific notation, is
4.3 x 10^-6m
How many grams of glucose are needed to prepare 400 mL of a 2.0%(m/v) glucose solution? a. 800. g b. 0.0050 g c. 8.0 g d. 2.0 g e. 200. g
8.0 g
Which of the following is an oxidation-reduction reaction? a. CaCl2 + Na2SO4---CaSO4 + 2NaCl b. KOH + HNO3---H2O + KNO3 c. N2 + O2---2NO
N2 + O2---2NO
Galactosemia is the name of a metabolic disorder. In this disorder, an enzyme is missing that is needed to ___.
convert galactose to glucose
What is the common name of this compound? Pentagon shape with -O-CH2-CH3 attached
cyclopentyl ethyl ether
The common name of this compound is? H /\N/\
diethylamine
Maltose is a ____.
disaccharide
The main type of attractive forces between molecules of hydrogen (H2) is ______.
dispersion forces
Carbon atoms always have how many covalent bonds?
four
How many valence electrons does carbon have?
four
Hydrocarbons are the primary constituents of____.
fuels
In a disaccharide, two monosaccharides are joined by what kind of bond?
glycosidic
Au is the symbol for ____?
gold
The mass percent concentration refers to ________.
grams of solute in 100 g of solution
Which of the following is an example of a physical change? a. grinding coffee beans b. converting water to hydrogen c. burning coal
grinding coffee beans
One difference between D-glucose and L-glucose is ___?
only D-glucose can act as a substrate in metabolic reactions
Which of the following compounds is a weak acid? a. ethanol b. ethanal c. phenol d. hexanol e. acetone
phenol
Which of the following polyatomic ions has a 3- ionic charge? a. nitrate b. sulfate c. phosphate
phosphate
Ionization energy is ______.
the energy needed to remove the least tightly bound electron
The amount of space occupied by a substance is its____. a. length b. density c. mass d. volume
volume
An organic compound composed of carbon and hydrogen connected only by single bonds is an _____?
alkane
Chiral drugs consists of only one enantiomer. The benefits of using a pure enantiomer, rather than a mixture, include__? a. higher potency b. elimination of side effects c. reduced chances of drug interactions d. all of the above
all of the above
The name of Al2(SO4)3 is______.
aluminum sulfate
What kind of compound is urea?
amide
Which of the following polyatomic ions has a positive charge? a. hydrogen carbonate b. ammonium c. nitrate
ammonium
The elements sodium, magnesium, and silicon____? a. are isotopes of each other b. have the same number of neutrons c. are in the same period of elements
are in the same period of elements
According to the kinetic theory of gases, particles of a gas___.
are very far apart
In the three-dimensional structure of methane, CH4, the hydrogen atoms attached to a carbon atom are aligned___. a. in a straight line b. at the corners of a square c. at the corners of a tetrahedron
at the corners of a tetrahedron
The product of (-4) x (-5) is
+20
How many moles of neon occupy a volume of 14.3 L at STP?
0.638 moles
Which of the following correctly gives the correct coefficients for the reaction below? N2H4+H2O2---N2+H2O
1, 2, 1, 4
For Kw, the product of [H3O+ ] and [OH- ] is ________. a. 1.0 × 10^-14 b. 1.0 × 10^-7 c. 1.0 × 10^-1 d. 1.0 e. 1.0 × 10^14
1.0 × 10^-14
What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL? a. 1.7 g/ml b. 45.0 g/mL c. 1.70 g/mL d. 0.59 g/mL
1.70 g/mL
What is the pH of a solution with [OH- ] = 1 × 10^-4 M? a. 10.0 b. -10.0 c. 4.0 d. -4.0 e. 1.0 × 10^-10
10.0
A kilocalorie of heat is required to raise the temperature of? a. 1 g of water by 10 C b. 10 g of water by 10 C c. 100 g of water by 10 C
100 g of water by 10 C
650 J is the same amount of energy as _____cal.
155 cal
What is the molar mass of sodium phosphate, Na3PO4?
163.9 g/mole
A gas sample contains 4.0 g of CH4 and 2.0 of He. What is the volume of the sample at STP?
17 L
The [ H3O+] of a solution with pH = 9.7 is ________. a. 9.7 M b. 1 × 10^9.7M c. 2 × 10^-10 M d. 5 × 10^-5M e. 9.7 × 10^-1 M
2 × 10^-10 M
0.400 moles of sucrose, C12H22O11, contains____C atoms.
2.89 x 10^24
Which of the following examples illustrates a number that is correctly rounded to three significant figures? a. 4.05438 to 4.054 b. 109 526 to 109 500 c. 20.0332 to 20.0
20.0332 to 20.0
At STP, what is the volume of 1.0 mole of carbon dioxide?
22.4L
Which of the answers for the following conversations contains the correct number of significant figures? a. 24.95 min x 1hr/60min = 0.4158 hr b 24.0 kg x 1lb/2.20 kg = 11 lb c. 2 L x 1.06qt/1 L = 2.12 qt
24.95 min x 1hr/60min=0.4158
A serving of fish contains 50g protein and 4g of fat. If protein has a caloric value of 4 kcal/g and fat has 9kcal/g, how many kcal are in the serving? Give in 2 SF
240 kcal
What is the concentration, in mass percent (m/m), of a solution prepared from 50.0 g NaCl and 150.0 g of water? a. 0.250% (m/m) b. 33.3% (m/m) c. 40.0% (m/m) d. 25.0% (m/m) e. 3.00% (m/m)
25.0% (m/m)
The number of electrons in the outer energy level of a neutral atom of boron (atomic number 5) is____. a. 2 b. 3 c. 8
3
12 is what precent of 36?
33%
Rubbing alcohol is 70.% (v/v) isopropyl alcohol by volume. How many mL of isopropyl alcohol are in a 1 pint (473 mL) container? a. 70. mL b. 0.15 mL c. 680 mL d. 470 mL e. 330 mL
330 mL
On a hot day, the thermometer read 95 F. What is the temperature in degrees Celcius?
35 C
How many calories are required to raise the temperature of a 35.0 g sample of iron from 25 C to 35 C? Iron has a specific heat of 0.108 cal/g C a. 3.8 cal b. 130 cal c. 38 cal
38 cal
For 85/38 Sr, there are_____.
38 protons and 47 neutrons
A 5.00-L tank contains helium gas at 1.50 atm. What is the pressure of the gas in mmHg?
3800 mmHg
Sodium-24 has a half-life of 15 hrs. How many hours is three half-lives?
45 hrs
A solution contains 43 mEq/L of Cl- and 11 mEq/L of HPO4 2-. If the only cation in the solution is Na+, what is the concentration in mEq/L? a. 43 mEq/L b. 11 mEq/L c. 54 mEq/L d. 32 mEq/L e. 2.0 mE
54 mEq/L
What mass of KCl is in 350 mL of 0.24 M KCl? a. 0.84 g b. 1.1.g c. 84 g d. 18 g e. 6.3 g
6.3 g
Which of the following descriptions of a subatomic particle is correct? a. A proton has a positive charge and a mass of approximately 1 amu. b. A neutron has a positve charge and a mass of approx 1 amu c. A proton has a positive charge and a negligible mass.
A proton has a positive charge and a mass of approximately 1 amu.
The ion of aluminum is______.
Al^3+
Cellulose is not digestible by humans because it contains glucose units linked by______-glycosidic bonds.
B-1, 4
Which of these formulas is expanded structural formula for an alkane with three carbon atoms? a. C3H6 b. C3H8 c. CH3-CH2-CH3
C3H6
Which of the following compounds contains an ether functional group?
CH3 CH3-C-O-H CH3
Which of the following elements forms two or more ions with different ionic charges? a. K b. Ca c. Fe
Fe
Which of the following statements correctly describes the hydronium-hydroxide balance in the given solution? a. In acids, [OH- ] is greater than [ H3O+]. b. In bases, [OH-] = [H3O+ ]. c. In neutral solutions, [H3O+ ] = [ H2O]. d. In bases, [OH- ] is greater than [H3O+ ]. e. In bases, [OH- ] is less than [H3O+ ].
In bases, [OH- ] is greater than [H3O+ ].
Which of the following is true of nonane, C9H20 which has a density of 0.79 g/mL, melts at -51 C, and boils at 151 C? a. Nonane is soluble in water b. Nonane is a gas at room temperature c. Nonane is a solid at room temperature d. Nonane floats on the surface of water
Nonane floats on the surface of water
Which of the following compounds is most soluble in water? a. CH3-CH2-CH3 b. CH3=CH2-CH2-O-CH3 c. O CH3-C-OH
O CH3-C-OH
Which of the following compounds contains a aldehyde functional group?
O CH3-CH2-C-CH3
Which one of the following compounds is an alcohol? a. OH CH3-CH-CH3 b. CH3-CH=CH-CH2-CH3 c. CH3-CH2-O-CH2-CH3
OH CH3-CH-CH3
The most widely used medical isotope in nuclear medicine is_____?
Tc-99m
phenol
What is the IUPAC name for this compound?
In this reaction, what is the substance oxidized? Zn + 2 HCl---ZnCl2 + H2
Zinc
The carbon tetra-chloride molecule, CCl4 is______?
a non-polar molecule with polar bonds
The solubility of KI is 50 g in 100 g of H2O at 20 °C. If 110 grams of KI are added to 200 grams of H2O, ________. a. all of the KI will dissolve b. the solution will freeze c. the solution will start boiling d. a saturated solution will form e. the solution will be unsaturated
a saturated solution will form
The shape of the water molecule (H2O) is_____.
bent
What is the radioactive particle released in the following nuclear equation? 90/39 Sr ? 90/39 Y + ?
beta particle
Which of the following is a chemical change? a. melting ice b. burning natural gas c. hammering gold into foil
burning natural gas
The common name of the compound O CH3CH2CH2C-OH
butyric acid
A hydrocarbon contains only the elements______. a. hydrogen and oxygen b. carbon and oxygen c. carbon and hydrogen d. carbon, hydrogen, and oxygen
carbon and hydrogen
The carbonyl group consists of _______?
carbon and oxygen attached by a double bond
A primary alcohol has a hydroxyl group bonded to a(n)
carbon bonded to one alkyl group
A phenol has an -OH group bonded to a(n)
carbon in a benzene ring
The cubic centimeter (cm^3 or cc) has the same volume as a ____? a. cubic inch b. cubic liter c. centimeter
centimeter
A positron is a particle emitted from the nucleus that has the same mass as a(n)______.
electron but has a positive charge
When a cation is formed from a representative element____.
electrons are lost and the ion is smaller
The primary substances of which all other things are composed are______? a. compounds b. molecules c. elements
elements
The phrase "ability to do work" is a definition of _____.
energy
What is the name of this compound? O CH3-C-O-CH2-CH3
ethyl acetate
If absorbed internally, alpha particle emitters are the most damaging because alpha particles _____.
have the greatest mass
Identify the noble gas in the following list? a. chlorine b. gold c. nitrogen d. helium
helium
The skeletal formula shown is that of /\/\/\
heptane
What is the IUPAC name of the continuous chain alkane with six carbon atoms?
hexane
Which of the following correctly describes the partial pressures of gases in the body? a. high O2, low CO2, oxygenated blood b. high O2, low CO2, deoxygenated blood c. high O2, high CO2, oxygenated blood
high O2, low CO2, oxygenated blood
If the reaction shown below is exothermic, the energy level of the reactants is ______. H2 + O2----2H2O
higher than that of the products
Gamma rays require the heaviest shielding of all the common types of nuclear radiation because gamma rays have the _____.
highest energy
What physiologically active amine is responsible for the signs and symptoms encountered in an allergic reaction?
histimine
In the number 12.345, the 4 is in the ____place.
hundredths
The amin type of attractive forces between molecules of ammonia (NH3) are ______?
hydrogen bonds
The splitting apart of an ester in the presence of a strong acid and water is called____?
hydrolysis
Benedict's test requires an aldehyde and an adjacent
hydroxyl
The metallic character of elements_____.
increases going down within a group
Which of the following is a measurement of mass in the metric system? a. centimeter b. Celsius c. kilogram
kilogram
Which of the following is the largest unit? a. millimeter b. meter c. kilometer
kilometer
A Value of 345 mm is a measure of____?
length
The measurement of the gravitational pull on an object is its___? a. volume b. mass c. weight d. length
length
The compound MgCl2 is named_______.
magnesium chloride
Which of the following is the smallest unit? a. milligram b. microgram c. gram d. micrometer
microgram
In which of the following is the metric unit paired with its correct abbreviation? a. millimeter.mL b. kilogram/cg c. gram/gm d. centimeter/km
millimeter/ mL
The molarity (M) of a solution refers to ________. a. moles of solute/L of solution b. moles of solute/ L of solvent c. moles of solute/100 mL of solution d. grams of solute/100 mL of solution e. grams of solute/L of solution
moles of solute/L of solution
Glucose can have the structure shown below. It can be classified as a
monosaccharide
An acid and base react to form a salt and water in a(n) ________ reaction. a. ionization b. dissociation c. oxidation d. neutralization e. reduction
neutralization
The correct name for the compound N2O3 is______.
nitrogen trioxide
You notice that there is more traffic between 8 and 9 in the morning. This would be a(n) a. theory b. hypothesis c. observation
observation
According to LeChâtelier's principle, predict whether adding H3O+ causes the system to shift in the direction of reactants, products, or no change. NH4+ (aq) + H2O(l) ----- NH3 (aq) + H3O+(aq) a. reactants b. products c. no change
reactants
When hyperventilation (rapid breathing) causes a patient to exhale large amounts of CO2, the blood pH rises in a condition called ________. a. metabolic acidosis b. metabolic alkalosis c. respiratory acidosis d. respiratory alkalosis e. pulmonary distress
respiratory alkalosis
In this list, which substance can be classified as a chemical? a. salt b. heat c. temp
salt
What is the classification for this unbalanced reaction? Fe + HCl___FeCl3 + H2
single replacement
Thiols are strong-smelling compounds responsible for ___?
skunky or bad smelling odors
The physical state(s) present when a substance is melting is (are)____? a. solid & liquid b. gas c. liquid & gas
solid & liquid
An enantiomer is _____.
stereoisomer whose mirror image cannot be superimposed
Which sugar is not a reducing sugar?
sucrose
An equivalent is ________. a. the amount of ion that has a 1+ charge b. the amount of ion that has a 1- charge c. the amount of ion that carries 1 mole of electrical charge d. 1 mole of any ion e. 1 mole of an ionic compound
the amount of ion that carries 1 mole of electrical charge
When a reaction is at equilibrium, ________. a. all reaction stops b. no more reactants are converted to products c. the reaction is no longer reversible d. the forward and reverse reactions occur at the same rate e. the products and reactants have the same energy content
the forward and reverse reactions occur at the same rate
Hyperglycemia is a condition in which___.
the glucose level in the blood is higher than normal
In the nuclear equation of beta decay,_______.
the new nucleus contains 1 more proton
A chemical equation is balanced when_____?
the number of atoms of each element is the same in reactants and products.
The mass number of an atom can be calculated from___. a. the number of protons plus neutrons b. the number of electrons plus protons c. the number of electrons
the number of protons plus neutrons
How many significant numbers are in the number 0.00208?
three