Chemistry » Page 76

Chemistry

Koen Flynn

The transfer of energy in fluids or gases is:

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Chemistry

Lewis Winters

Why is the study of crime difficult?

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Chemistry

Taz

An electron that is in the highest energy level of an atom and determines the atom's chemical properties is called a (n)

paired electron.

opposite-spin electron.

valence electron.

extra electron.

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Chemistry

Karson Huff

If the substance in the diagram was heated to "T2," what is happening if the substance is allowed to approach T1?

Select all that apply.

The average kinetic energy is decreasing.

The average kinetic energy has increased.

The highest energy level has decreased.

Fewer molecules would have a lower energy level.

More molecules have a higher energy level.

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Chemistry

Kash Shields

What is the electron configuration of silicon?

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Chemistry

Madison Santiago

The specific rotation of (r) - 2-butanol is - 13.5°. what specific rotation would be observed for a 3:1 mixture of (s) : (r) 2-butanol?

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Chemistry

Holmes

What element would be sidekick of fluorine and its enemies?

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Chemistry

Sadie Williams

What is the final step of a scientific investigation? speaking at a conference reporting the results developing a Web site writing in a scientific journal

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Chemistry

Janessa

How are percent mass calculations used?

a.

They are used for determining concentrations in solutions and water of hydration

c.

They are used for determining water of hydration and the combustion analysis of hydrocarbons

b.

They are used for determining molecular purity and concentration in solutions

d.

None of the above

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Chemistry

Angelique Parrish

If you use half as many moles of reactant * then:

you'll make twice as much money

the reaction won't happen

the reaction will release half as much heat

the reaction will absorb heat

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Chemistry

Jade Hernandez

How to write a balanced chemical equation from empirical formula?

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Chemistry

Noelle Bradshaw

Which contains a greater number of atoms, a mole of silver or a mole of gold?

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Chemistry

Karla

Match the vocabulary word with its definition. Match the items in the left column to the items in the right column.

1. A charged atom or particle

valence electrons

2. The energy necessary to overcome the attractions of electrons to the nucleus of an atom so as to remove electrons from the atom in the gas phase

ion

3. Electrons from one atom that enter into reactions with electrons from a second atom

ionization energy

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Chemistry

Guest

Which is not an acid typically formed in the atmosphere as part of acid deposition?

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Chemistry

Torres

Which of the following does not affect the electrical resistance of a body?

A. Length of the body

B. Temperature of the body

C. Material composing the body

D. Bodies directly surrounding the body

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