Chemistry Honors final exam review (part 2)

The expression V- kn is a statemen a. Boyle's law b. the law of combining volumes. c. Graham's law of effusion. d. Avogadro's law.

Avogadros law

Which type of crystal consists of positive metal cations surrounded by valence electrons that are donated by the metal atoms and belong to the crystal as a whole? a. ionic b. covalent network c. metallic d. covalent molecular

C. Metallic

Which of the following statements about ionic crystals is not correct? a. Their structure consists of positive and negative ions arranged in a regular pattern. b. The strong binding forces between the positive and negative ions in their structure give them certain properties c. Their ions can be monatomic or polyatomic. d. They consist of molecules held together by intermolecular forces.

They consist of molecules held together by intermolecular forces.

All of the following are examples of units except a. mass b. kilometer. c. gram. d. ounce

a mass

For the reaction represented by the equation 2H2+ O- 2H,O, how many moles of water can be produced from 6.0 mol of oxygen? a. 2.0 mol b. 6.0 mol c . 12mol d. 18 mol

a. 2.0 mol

What is the partial pressure of water vapor in oxygen gas collected by water displacement at 10°C and 750 mm Hg? a. 9.2 mm Hg b. 740.8 mm Hg c. 6.5 mm Hg d. 750.8 mm Hg

a. 9.2 mm Hg

Which instrument measures atmospheric pressure? a. Barometer b. manometer c. vacuum pump d. torrometer

a. Barometer

the idea of arranging the elements in the periodic table according to their chemical and physical properties is attributed to a. Mendeleev. b. Moseley c. Bohr d. Ramsay.

a. Mendeleev.

Forces holding particles together are strongest in a a. solid. b.liquid. c. gas. d. vapor.

a. Solid

To balance a chemical equation, it may be necessary to adjust the a. coefficients. b. subscripts. c. formulas of the products. d. number of products.

a. coefficients.

The units of molar mass are a. g/mol. b. mol/g c. amu/mol. d. amu/g.

a. g/mol.

After caleulating the amount of reactant B required to completely react with A, then comparing that amount with the amount of B available, one can determine the a. limiting reactant. b. rate of the reaction. c. energy released in the reaction. d. pathway of the reaction.

a. limiting reactant.

The compressibility of solids is gencrally a.lower than the compressibility of liquids and gases. b. higher than the compressibility of liquids only c. about equal to the compressibility of liquids and gases. d. higher than the compressibility of gases only

a. lower than the compressibility of liquids and gases.

If one knows the mass and molar mass of reactant A and the molar mass of product D in a chemical reaction, one can determine the mass of product D produced by using the a. mole ratio of D to A from the chemical equation. b. group numbers of the elements of A and D in the periodic table. c. estimated bond energies involved in the reaction. d. electron configurations of the atoms in A and D.

a. mole ratio of D to A from the chemical equation.

The most common form of hydrogen has a. no neutrons. b. one neutron. c. two neutrons. d. three neutrons.

a. no neutrons.

The spin quantum number of an electron can be thought if as describing a. the direction of electron spin. b. whether the electron's charge is positive or negative. c. the electron's exact location in orbit. d. the number of revolutions the electron makes about the nucleus per second.

a. the direction of electron spin.

one knows the mass of A and the molar masses of ) In the chemical equation WA + xB → yC + 2D , if A, B, C, and D, one can determine a. the mass of any of the reactants or products. b. the mass of B only c. the total mass of C and D only. d. the total mass of A and B only.

a. the mass of any of the reactants or products.

What is the maximum possible amount of product obtained in a chemical reaction? a. theoretical yield b. percentage yield c. mole ratio d. actual yield

a. theoretical yield

What is the value of the gas constant? L atm a. 0.0821 mol K b. 0.281 L atm L atm c. 0.0281 mol d. 0.0821 mol K

a.) 0.0821 mol K

In the reaction represented by the equation C+ 2H2 - CH, what is the mole ratio of hydrogen to methane? a. 1:1 b. 2:1 c .1:2 d. 2:4

b 2:1

In In the the reaction reaction represented represented by by the the equation equation N2 N2+ + 3H2- > 2NH3 , what is the mole ratio of nitrogen to ammonia? a. 1:1 b. 1:2 c. 1:3 d. 2:3

b. 1:2

The number of atoms in 1 mol of carbon is a.6.022 x 1022 b. 6.022 x 1023 c. 5.022 x 102 d. 5.022 x 1023.

b. 6.022 x 1023

Nuclear forces exists because the particles in the nucleus are a. oppositely charged. b. close together c. highly energized. d. moving very fast.

b. close together

The nuclear binding energy is released when a nucleus a. is bombarded. b. divides c. is formed from its constituent particles d. decays

b. divides

For an electron in an atom to change from the ground state to an excited state, a. energy must be released. b. energy must be absorbed. c. radiation must be emitted. d. the electron must make a transition from a higher to a lower energy level.

b. energy must be absorbed.

In the chemical reaction represented by the equation wA + xB-yC+ zD, a comparison of the number of moles of A to the number of moles of C would be a(n) a. mass ratio. b. mole ratio. c, electron ratio. d. energy proportion.

b. mole ratio.

and pressure conditions at which The triple point of a substance is the temperature a. density is greatest. b. states of a substance coexist at equilibrium. c. equilibrium cannot occur d. kinetic energy is at a minimum.

b. states of a substance coexist at equilibrium.

Which instrument measures the pressure of an enclosed gas? a. barometer b. manometer c. vacuum pump d. torrometer

b.) manometer

Which of the following would be investigated in reaction stoichiometry? a. the masses of hydrogen and oxygen in water b. the amount of energy released in chemical reactions c the mass of potassium required to produce a known mass of potassium chloride d. the types of bonds that break and form when acids react with metals

c the mass of potassium required to produce a known mass of potassium chloride

Convert the pressure 0.75 atm to mm Hg. a. 101.325 mm Hg b. 430 mm Hg c) 570 mm Hg d. 760 mm Hg

c) 570 mm Hg

The Haber process for producing ammonia commercially is represented by the equation N2(g) + 3H-(g) 2NH,(8). To completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen gas are required? a. 1.0 mol b. 2.0 mol c. 3.0 mol d. 6.0 mol

c. 3.0 mol

In the reaction represented by the equation N2 + 3H2 → 2NH3 , what is the mole ratio of hydrogen to ammonia? a. 1:1 b. 2:1 C. 3:2 d. 6:8

c. 3:2

For the reaction represented by the equation AgNO, +NaCI-NaNO, + AgCI, how many moles of silver chloride, AgC1, are produced from 7.0 mol of silver nitrate AgNO3? a. 1.0 mol b. 2.3 mol c. 7.0 mol d. 21 mol

c. 7.0 mol

If one knows the mole ratio of a reactant and product in a chemical reaction, one can a. estimate the energy released in the reaction. b. calculate the speed of the reaction. c. calculate the mass of the product produced from a known mass of reactant. d. decide whether the reaction is reversible

c. calculate the mass of the product produced from a known mass of reactant.

To which block do the actinide elements belong? a. d block b. sblock c. fblock d. block

c. fblock

Which of the following has the greatest penetrating ability? a. alpha particles b. beta particles c. gamma rays d. All have the same penetrating ability.

c. gamma rays

spontaneous disintegration of a nucleus into a slightly lighter and more stable nucleus accompanied by emission of particles, electromagnetic radiation, or both, is a. nuclear fusion. b. nuclear radiation. c. radioactive decay d.nuclear fission.

c. radioactive decay

An atom is electrically neutral because a. neutrons balance the protons and electrons. b. nuclear forces stabilize the charges. c. the numbers of protons and electrons are equal d. the numbers of protons and neutrons are equal.

c. the numbers of protons and electrons are equal

Which reactant controls the amount of product formed in a chemical reaction? a. excess reactant b. mole ratio c. composition reactant d limiting reactant

d , limiting reactant

An orbital that can never exist according to the quantum description of the atom is a. 3d b. 8s. c. 6d. d. 3f.

d. 3f.

Which of the following is the symbol for an alpha particle? a. 1/1 H b. 1/0 N c. 0/-1 e d. 4/2 He

d. 4/2 He

What is the measured amount of a product obtained from a chemical reaction? a. mole ratio b. percentage yield c. theorctical yield d. actual yield

d. actual yield

rhe intermolecular forces between particles in a liquid can involve all of the following except a. London dispersion forces. b. hydrogen bonding. c. dipole-dipole attractions. d. gravitational forces.

d. gravitational forces.

The liquid state of matter can be described as b. having a. having definite shape and definite volume. b.neither a definite shape nor a definite volume. c. having lost electrons owing to energy content. d. having a definite volume but not a definite shape.

d. having a definite volume but not a definite shape.

The intermolecular forces between particles are a. weaker in solids than in liquids. b. stronger in gases than in solids. c equal in strength in gases and in liquids. d. stronger in liquids than in gases.

d. stronger in liquids than in gases.

In what kind of reaction do two or more substances combine to form a new compound? a. decomposition reaction b. combustion reaction c. double-displacement reaction d. synthesis reaction

d. synthesis reaction

The ideal gas law is equivalent to Boyle's law when a the number of moles and the pressure are constant. b. R equals zero. c. the pressure is 1 atm. d. the number of moles and the temperature are constant.

d. the number of moles and the temperature are constant.

The total number of protons and neutrons in the nucleus of an atom is its a. atomic number. b. Avogadro number. c. mass number. d. average atomic mass.

mass number

Each of the four types of reaction stoichiometry problems requires using a a. table of bond energies. b. chart of electron configurations. c. Lewis structure. d. mole ratio

mole ratio

In Period 3 there are 8 elements. What sublevel(s) is (are) being filled? a. S b. s and d c. s and p d. d and f

s and p