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Zolol [24]
3 years ago
10

Which statement correctly compares the motion of atoms in liquid mercury and solid copper? Copper atoms in copper move while sta

ying close together, whereas mercury atoms vibrate around fixed positions. Copper atoms move while staying close together, whereas mercury atoms are independent of one another. Copper atoms vibrate around fixed positions, whereas mercury atoms move around while staying close together.
Chemistry
2 answers:
lapo4ka [179]3 years ago
5 0

Answer:

Copper atoms vibrate around fixed positions, whereas mercury atoms move around while staying close together.

Explanation:

rewona [7]3 years ago
4 0

Answer:

  • <u><em>Copper atoms vibrate around fixed positions, whereas mercury atoms move around while staying close together. </em></u>

Explanation:

The <em>solid </em>state of matter is characterized by rigid crystalline structures, in which <em>atoms </em>can vibrate around a fixed position. That is why <em>solids</em> have definite shape and volume, and cannot flow. This is described in the last statement when it states <em>"Copper atoms vibrate around fixed positions"</em>

The <em>liquid </em>state of matter is characterized by the <em>atoms </em>being more separated than in<em> solids.</em> While the <em>atoms </em>in the liquid are not completely free to move, they can slide past the neighboring atoms, which gives them the property to flow. Therefore, the liquids, although they have a defined volume, take the form of the container. This is what the last statement describes as "mercury atoms move while remaining together"

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Answer:

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Explanation:

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3 0
3 years ago
Calculate the molarity of a solution of Nach if it contains 7.2.g Nach in 100.0 mL of solution. andver: m Nach . .
Norma-Jean [14]

Answer:

1.23 M

Explanation:

Molarity of a substance , is the number of moles present in a liter of solution .

M = n / V

M = molarity  

V = volume of solution in liter ,

n = moles of solute ,

Moles is denoted by given mass divided by the molecular mass ,  

Hence ,  

n = w / m

n = moles ,  

w = given mass ,  

m = molecular mass .

From the question ,

w = given mass of NaCl = 7.2 g

As we know , the molecular mass of NaCl = 58.5 g/mol

Moles is calculated as -

n = w / m  =  7.2 g / 58.5 g/mol = 0.123 mol

Molarity is calculated as -

V = 100ml = 0.1 L            (since , 1 ml = 1/1000L )

M = n / V  =  0.123 mol / 0.1 L = 1.23 M

5 0
3 years ago
What is the volume, in cubic meters, of an object that is 0.21 m long, 4.7 m wide, and 5.3 m high?
oee [108]

Answer:

The formula for volume of a rectangle is length multiply by width multiply thus, 0.25 m multiply 6.1 m multiply by 4.9 m = 7.5m^3.

Explanation:

the least number of significant figures is 2 thus the final answer will have the same number of significant figures. 7.5m^3

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Explanation: I'm not sure sorry :|

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7 0
2 years ago
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