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4 years ago

Which statements accurately describe volume? Check all that apply.

Chemistry

2 answers:

blagie [28]4 years ago

7 0

One unit of volume is the milliliter.

Liquids and solids have a constant volume.

Volume is a physical property of an object.

ycow [4]4 years ago

4 0

Answers are:

1) Volume is a physical property of an object.

2) One unit of volume is the milliliter.

3) Liquids and solids have a constant volume.

Volume is the amount of space that a substance occupies. It is affected by temperature.

In solid, molecules are closely packed, stiff and do not changes of shape or volume.

Liquids have definite volume, but no fixed shape.

One liter is equal to 1000 milliliters (mL) or 1000 cubic centimetres (1000 cm³).

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Why did most of the alpha particles go straight through the gold foil in Rutherford's experiment?

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Answer:

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Those that passed straight through did so because they didn't encounter any nuclei.

Explanation:

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3 years ago

The atom with the same number of neutrons as 12C is 9Be. 11B. 13C. 14N.

julia-pushkina [17]

Answer : The atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

Explanation :

The given atom is, $^{12}C$

Atomic mass number = 12

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 12 - 6 = 6

Now we have to determine the number of neutrons in the given options.

In atom, $^{9}Be$

Atomic mass number = 9

Atomic number = 4

Atomic number = Number of protons = Number of electrons = 4

Number of neutrons = Atomic mass number - Atomic number = 9 - 4 = 5

In atom, $^{11}B$

Atomic mass number = 11

Atomic number = 5

Atomic number = Number of protons = Number of electrons = 5

Number of neutrons = Atomic mass number - Atomic number = 11 - 5 = 6

In atom, $^{13}C$

Atomic mass number = 13

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 13 - 6 = 7

In atom, $^{14}N$

Atomic mass number = 14

Atomic number = 7

Atomic number = Number of protons = Number of electrons = 7

Number of neutrons = Atomic mass number - Atomic number = 14 - 7 = 7

Therefore, the atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

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3 years ago

HOW IS PHENOTYPE DIFFERENT THAN GENOTYPE?

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3 years ago

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A 2.10 L vessel contains 4.65 mol of nitrous oxide (N2O) at 3.82 atm. What will be the pressure of this gas in a container that’

sveticcg [70]

Answer:

The answer to your question is 7.64 atm

Explanation:

Data

Volume 1 = V1 = 2.1 l

moles = 4.65

Pressure 1 = P1 = 3.82 atm

Volume 2 = Volume 1/2

Pressure 2 = ?

Process

1.- Calculate the new volume

Volume 2 = 2.10/2

Volume 2 = 1.05 l

2.- Use Boyle's law to find the Pressure

P1V1 = P2V2

-Solve for P2

P2 = P1V1 / V2

-Substitution

P2 = (3.82)(2.1) / 1.05

-Simplification

P2 = 8.022/1.05

-Result

P2 = 7.64 atm

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