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Chem 106 Exam 2 || CORRECTRY ANSWERED
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  • Chem 106
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  • Chem 106

Gasoline with an octane rating of 90 would give the same performance in a standard test engine as a mixture of a. 90 heptane and 10 isooctane b. 90 parts isooctane and 90 parts heptane c. 90 parts isooctane and 90 parts water d. 90 isooctane and 10 heptane - Correct Answer d. 90 isooctane and...

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  • September 29, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • gasoline with an octane rating of 90 would give th
  • which of the following situations would be an exam
  • which compound is most soluble in water a ch3ch2
  • the first law of thermodynamics is sometimes call

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  • Chem 106
  • Chem 106

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Chem 106 Exam 2 || CORRECTRY ANSWERED
Gasoline with an octane rating of 90 would give the same performance in a standard test engine as a
mixture of

a. 90 heptane and 10 isooctane

b. 90 parts isooctane and 90 parts heptane

c. 90 parts isooctane and 90 parts water

d. 90 isooctane and 10 heptane - Correct Answer d. 90 isooctane and 10 heptane



Which of the following situations would be an example of kinetic energy?

a. compressed spring

b. nuclear explosion

c. tank of gasoline

d. batter waiting for the ball to be pitched - Correct Answer b. nuclear explosion



which compound is most soluble in water?

a. ch3ch2ch3

b. ch3coch3

c. ch3ch2cho

d. ch3ch2chooh - Correct Answer d. ch3ch2chooh



The first law of thermodynamics is sometimes called the law of

a. conservation of mass

b. conservation of energy

c. creation of energy

d. destruction of energy - Correct Answer b. conservation of energy



Carboxcylic acid + alcohol = _______ + h20

a. ketone

, b. aldehyde

c. ester

d. amine - Correct Answer c. ester



Approx what percentage of the energy used to support our current lifestyle comes from fossil fuels?

a. 50

b. 35

c. 15

d. over 85 - Correct Answer d. over 85



In general, a higher proportion of branched chain hydrocarbons in a gasoline formulation

a. increases octane rating

b. decreases octane rating

c. burnes cleaner

d. burns cooler - Correct Answer a. increases octane rating



Which of the following alkanes will have the lowest boiling point?

a. ch4

b. c5h12

c. c12h26

d. c22h46 - Correct Answer a. ch4



Control rods in a nuclear reactor are used to

a. absorb neutrons and slow fission

b. release neutrons and slow fission

c. release neutrons and speed up fission

d. absorb neutrons and speed up fission - Correct Answer a. absorb neutrons and slow fission



Benedicts reaction tests for the presence of:

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