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