Solution-Write out the electron configurations of the ions

Write out the electron configurations of the ions

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Reference no: EM13915156

Question 1 of 23

2.0 Points

Write out the electron configurations of the ions below and determine which one is listed with an incorrect charge. (the numbers and charges written after the elemental symbol should be understood as superscripts)

A.F-

B.S2+

C.Al3+

D.Mg2+

E.none of the above

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Question 2 of 23

2.0 Points

We discussed 4 different subshells in the lesson. How many electrons can be held in d?

A.12

B.6

C.10

D.2

E.none of the above

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Question 3 of 23

2.0 Points

In the second principal shell, you would expect to find how many how many subshells?

A.3

B.2

C.4

D.1

E.not enough information

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Part 2 of 8 -

Question 4 of 23

2.0 Points

If the center atom has a double bond, a single bond, and 1 lone pair around it, what type of molecular geometry is present?

A.trigonal pyramidal

B.linear

C.tetrahedral

D.bent

E.not enough information

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Question 5 of 23

2.0 Points

Draw the structure of carbon disulfide according to Lewis theory. What would be its associated molecular geometry?

A.linear

B.trigonal pyramidal

C.tetrahedral

D.bent

E.not enough information

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Question 6 of 23

2.0 Points

Draw the structure of xenon diflouride according to Lewis theory. What would be its associated molecular geometry?

A.tetrahedral

B.trigonal pyramidal

C.bent

D.linear

E.not enough information

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Part 3 of 8 -

Question 7 of 23

2.0 Points

If you drop Mg into HCl, you will evolve hydrogen gas. If you perform this reaction over water at a temperature of 298.15 K at a pressure of 0.977 atm, and the vapor pressure of water at this temperature is 0.0313 atm, what is the pressure of hydrogen?

A.718.7 mm Hg

B.760.0 mm Hg

C.742.5 mm Hg

D.766.3 mm Hg

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Question 8 of 23

2.0 Points

I'm looking at the barometer in my lab as I type this question. It says the pressure is 1520.0 mm Hg. What is this pressure expressed in atmospheres?

A.2.000

B.1520

C.380.0

D.203,000

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Question 9 of 23

2.0 Points

You have been given a 0.325 L canister containing a gas. The pressure gauge on the canister reads 721 mmHg, and the temperature gauge reads 305.15 K. The piston on the canister was pushed to compress the gas to 0.286 L, thereby increasing the pressure to 901 mmHg. What is the new temperature in Celsius? Remember sig figs.

A.62.4°C

B.215°C

C.35.2°C

D.335°C

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Part 4 of 8 -

Question 10 of 23

2.0 Points

How might one go about increasing the vapor pressure of a liquid?

A.use a nonvolatile compound.

B.increase the temperature.

C.increase the viscosity.

D.establish dynamic equilibrium.

E.all of the above

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Question 11 of 23

2.0 Points

We discussed the different types of intermolecular forces in this lesson, one of which was the "hydrogen bond." Which of the molecules below would have this type of intermolecular force?

A.CH₃OH

B.H₂O

C.HF

D.NH₃

E.all of the above

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Question 12 of 23

2.0 Points

We discussed the different types of intermolecular forces in this lesson. Which is the strongest in CF₂H₂ ?

A.dispersion forces

B.hydrogen bonding

C.dipole-dipole forces

D.X-forces

E.none of the above

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Part 5 of 8 -

Question 13 of 23

2.0 Points

Suppose you dissolve 0.64 mol NaF in 0.0635 kg of water. What would be the mass % NaF in this solution?

A.29.7%

B.42.3%

C.70.3%

D.26.9%

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Question 14 of 23

2.0 Points

Suppose you had 0.575 L of a lithium fluoride solution. If its concentration was 0.750 M, how many grams of LiF would it contain?

A.0.0338

B.11.2

C.1.12 × 104

D.19.9

E.33.8

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Question 15 of 23

2.0 Points

Water can dissolve many compounds What happens when an ionic substance dissolves in it?

A.the positive end of water dipoles attract the negative ions.

B.the solvent-solute attractive forces overcome the solute-solute attractions.

C.the negative end of water dipoles attract the positive ions.

D.each of the above (A, B, and C) occurs.

E.none of the above (A, B, or C) occurs.

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Part 6 of 8 -

Question 16 of 23

2.0 Points

Acids have many useful properties that can be exploited for our own benefit. They are commonly used to make many things that we use. For example, which of these is associated with making fertilizer?

A.HBr

B.HNO₃

C.HCl

D.HF

E.all of the above

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Question 17 of 23

2.0 Points

We discussed conjugate pairs of acids and bases in this lesson. Which of these is NOT such a pair?

A.H2CO3 and HCO3-

B.NH4+ and NH3

C.H2S and OH-

D.H2O and OH-

E.none of the above

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Question 18 of 23

2.0 Points

If a certain solution has a pH of 3.35, what would be its hydrogen ion concentration?

A.4.5 × 10^-5 M

B.2.2 × 10³ M

C.1 × 10^3.3⁵ M

D.3.35 × 10^-14 M

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Part 7 of 8 -

Question 19 of 23

2.0 Points

Several types of reactions were discussed in this lesson. For example, consider this reaction:

CH₃CH=CHCH₃ + H₂ → CH₃CH₂CH₂CH₃
How would this reaction best be classified by type?

A.hydrogenation.

B.combustion.

C.substitution.

D.addition.

E.none of the above

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Question 20 of 23

2.0 Points

Of the descriptive terms below, which do NOT apply to this compound:

A.an alcohol

B.unsaturated

C.an alkene

D.a carboxylic acid

E.none of the above

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Question 21 of 23

2.0 Points

Remember that prefixes and suffixes imply how many atoms of each type are present in organic compounds. Consider butene--what is its chemical formula?

A.C₄H₆

B.C₄H₄

C.C₄H₁₀

D.C₄H₈

E.none of the above

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Part 8 of 8 -

Question 22 of 23

2.0 Points

Consider amino acids that are separated by long distances on the same chain. When their R-groups interact with one another, they are holding together which type of structure?

A.Primary Structure

B.Secondary Structure

C.Tertiary Structure

D.Quaternary Structure

E.Pental Structure

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Question 23 of 23

2.0 Points

What is a chromosome, exactly?

A.a portion of DNA that codes for a single protein.

B.a sequence of three nucleotides that codes for a single amino acid.

C.a structure within the cell nucleus that houses genes.

D.a portion of a protein that codes for a single amino acid.

E.none of the above

Reference no: EM13915156

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Write out the electron configurations of the ions

Reference no: EM13915156

Reference no: EM13915156

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