Chemistry

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Draw the best Lewis structure for CBr3+. What is the formal charge on the C?

+1

What is the oxidation number of the chromium atom in CaCrO4 ?

+6

Give the numbers for ml for an f orbital.

-3, -2, -1, 0, +1, +2, +3

For n = 3, what are the possible values for l?

0, 1, 2

What is the density of chlorine gas at STP?

3.16 g/L

How many orbitals are contained in the third principal level (n = 3) of a given atom?

9

Which of the following is an example of physical change?

Dew forms on a blade of grass.

Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K2S and Fe(NO3)2 are mixed.

Fe2+(aq) + S2-(aq) → FeS(s)

Give the ground state electron configuration for Pb

[Xe]6s^2 4f^14 5d^10 6p^2

Which of the following is NOT true about formal charge?

all charges should be zero

Identify the discovery that Thomson made.

an electron

Which of the following quantum numbers describes the shape of an orbital?

angular momentum quantum number

Write the name for Ba3(PO4)2.

barium phosphate

Identify the products of a combustion reaction of an alcohol.

carbon dioxide and water

Determine the name for N2O5.

dinitrogen pentoxide

Which of the following signs on q and w represent a system that is doing work on the surroundings, as well as gaining heat from the surroundings?

q = +, w = -

Which of the following signs on q and w represent the surroundings that is doing work on the system, as well as losing heat to the surroundings?

q = -, w = +

Identify the color of a flame test for lithium.

red

What are the possible orbitals for n = 4?

s, p, d, f

Identify the weakest bond

single covalent bond

An example of kinetic energy is

skiing down a mountain

Choose the pure substance from the list below.

sugar

Which of the following does NOT describe a metal?

tends to gain electrons

Give the name for P4O10

tetraphosphorus decoxide

The systematic pattern for filling up the electron configuration, from low energy to high energy, for an element is called the

the Aufbau principle.

The statement, "In a chemical reaction, matter is neither created nor destroyed" is called

the Law of Conservation of Mass.

Identify the discovery that Millikan made

the charge of a single electron

Which of the following processes is exothermic?

the condensation of water

Define specific heat capacity.

the quantity of heat required to change a system's temperature by 1°C

A covalent bond is best described as

the sharing of electrons between atoms.

An ionic bond is best described as

the transfer of electrons from one atom to another.

Which of the following processes is endothermic?

the vaporization of ethanol

Give the name for SnO.

tin(II) oxide

How do you determine the central atom in a Lewis structure?

typically the least electronegative element

Identify the color of a flame test for potassium.

violet

Choose the homogeneous mixture from the list below.

wine

Give the temperature and pressure at STP.

0°C and 1.00 atm

List the number of sigma bonds and pi bonds in a triple bond.

1 sigma, 2 pi

Give the number of core electrons for chlorine.

10

The bond angle in NBr3 is

107°

What value of l is represented by a d orbital?

2

Choose the statement below that is FALSE.

A strong acid solution consists of only partially ionized acid molecules.

The volume of a gas is inversely proportional to the pressure of a gas is known as

Boyle's Law

The chemical formula for calcium nitride is

Ca3N2.

Which one of the following compounds contains ionic bonds?

CaO

Give the formula for potassium dichromate

K2Cr2O7

Which of the following compounds is an Arrhenius base?

LiOH

Which of the following will cause the volume of an ideal gas to triple in value?

Lowering the pressure by a factor of 3 while the temperature stays constant.

The mixing of which pair of reactants will result in a precipitation reaction?

Mg(NO3)2(aq) + K2CO3(aq)

Identify the element that has a ground state electron configuration of [Kr]5s24d3

Nb

Which of the following statements is TRUE?

Nonmetals are located on the right side of the periodic table.

Which of the following statements about subatomic particles is FALSE?

Protons have about the same mass as electrons.

Use Lewis theory to determine the chemical formula for the compound formed between Rb and O.

Rb2O

Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of lithium sulfide and copper(II) nitrate are mixed.

S 2- (aq) + Cu2+(aq) → CuS(s)

Which statement is TRUE according to the kinetic molecular theory?

The average kinetic energy of a particle is proportional to the temperature in Kelvin.

Which statement is TRUE about kinetic molecular theory?

The collisions of particles with one another is completely elastic.

Choose the ground state electron configuration for Ti2+ .

[Ar]3d2

Choose the ground state electron configuration for Cr3⁺

[Ar]3d3

Give the ground state electron configuration for As

[Ar]4s^2 3d^10 4p^3

Which of the following is a molecular element?

fluorine

Define pressure.

force exerted per unit area by gas particles as they strike the surfaces around them

Write the name for FeS.

iron(II) sulfide

Identify the correct values for a 2p orbital

n = 2, l = 1, ml = 0

Which of the following quantum numbers describes the size and energy of an orbital?

principal quantum number

Identify the description of an atom.

protons and neutrons in nucleus; electrons in orbitals


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