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5 10

Chemical Reactions

Calculations

Organic

A&BElectrochem

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15

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Team TwoTeam Two

Team ThreeTeam Three

Team FourTeam Four

Team FiveTeam Five

Team SixTeam Six0 0

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How many moles of a gas sample are in a 20.0 L container at 373 K and 203 kPa? The gas constant is 8.31 L-kPa/mol-K.

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In the process 92

235U + 01n   52

137Te + 4097Zr + 20

1n, what can the two neutrons at the end do?

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Calculations

Question for 5 Points

You dissolve 0.74 g of potassium chloride (KCl) in

500 mL of water. What is the molarity of the solution? Use

a periodic table. Show Answer

Calculations

Answer for 5 Points

0.02 M

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Calculations

Question for 10 Points

Show Answer

How much heat do you need to raise the temperature of 300 g of ethanol

from 0°C to 20°C?

Calculations

Answer for 10 Points

14.6 kJ

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Calculations

Question for 15 Points

Show Answer

If you have 10 grams of a substance that decays with a half-life of 14 days, then how much will you have after 42 days?

Calculations

Answer for 15 Points

1.25g

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Calculations

Question for 20 Points

For the transmutation X + 2

4He   612C + 0

1n, which of the following is X?

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Calculations

Answer for 20 Points

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Calculations

Question for 25 PointsFor the reaction of hydrogen gas with

iodine gas to make hydrogen iodide gas, H2 + I2  2HI, you have the following concentrations at equilibrium: [H2] =

4.5647 × 103 M, [I2] = 7.378 × 104 M, and [HI] = 1.3544 × 102 M. What is the

equilibrium constant?Show Answer

Calculations

Answer for 25 Points

54.47

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Organic

Question for 5 PointsWhat bonds does the compound

pictured below have?

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Organic

Answer for 5 Points

C-C and C-H

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Organic

Question for 10 Points

Which of the following functional groups defines a

carboxylic acid?

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Organic

Answer for 10 Points

-COOH

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Organic

Question for 15 Points

Which type of bond links amino acids together?

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Organic

Answer for 15 Points

peptide bond

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Organic

Question for 20 Points

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To which group of biochemicals do steroids belong?

Organic

Answer for 20 Points

lipids

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Organic

Question for 25 Points

Show Answer

For the reaction CH3COOH  CH3COO + H+, what is the conjugate base?

Organic

Answer for 25 Points

CH3COO- is a conjugate base

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Acids & Bases, Electrochemistry

Question for 5 Points

Show Answer

Of the metals Pb, Mg, Au, and Na, which will not spontaneously donate electrons to copper in

solution?

Acids & Bases, Electrochemistry

Answer for 5 Points

0

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Acids & Bases, Electrochemistry

Question for 10 Points

Which of the following is a weak base?

Potassium hydroxideAmmoniaVinegar Show Answer

Acids & Bases, Electrochemistry

Answer for 10 Points

ammonia

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Acids & Bases, ElectrochemistryQuestion for 15 Points

Show Answer

Oxidation Numbers

Answer for 15 Points

solid Zn

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Oxidation Numbers

Question for 20 Points

A solution has a hydrogen ion (or hydronium ion) concentration of 3.16 ×

108 M. What is the pH of the solution? Show Answer

Acids & Bases, Electrochemistry

Answer for 20 Points

7.5

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Acids & Bases, Electrochemistry

Question for 25 PointsWhich of the following reactions occurs at

the cathode in a voltaic cell?

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Acids & Bases, Electrochemistry

Answer for 25 Points

C

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Show Question

“Big Points”

QuestionA correctly written

thermochemical reaction needs what 4 things?

Show Answer

302928272625242322212019181716151413121110987654321

Big Points

Answer for Big Points1) Reactants & products2) Phase symbols (s,l,g)3) Balanced equations

4) Enthalpy

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