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Burka [1]
3 years ago
5

(Gr.7science)

Chemistry
2 answers:
MissTica3 years ago
4 0

Answer:Crystalline solids have well-defined edges and faces, diffract x-rays, and tend to have sharp melting points. In contrast, amorphous solids have irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures.

Explanation:

Alla [95]3 years ago
3 0

Answer:

:-::-::

Explanation:

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Which one of the following characteristics indicates the presence of weak intermolecular forces in a liquid?A) none of the above
grin007 [14]

Answer:

C) a low heat of vaporization.

Explanation:

It is C) a low heat of vaporization.

Low heat of vaporization means less amount of energy is required to vaporize a liquid. This further means the liquid has weaker intermolecular force of attraction that is why on provide lesser heat only it vaporizes.

Low vapor pressure, high boiling point and high critical temp. all contribute to strong intermolecular forces in a liquid

6 0
3 years ago
Equilibrium systems exist throughout nature.<br> True or False??
Natali5045456 [20]
I think the answer is true
6 0
4 years ago
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How many TOTAL ELECTRONS are in the compound CO2?
Liula [17]

Answer:

22 electrons are in the compound CO2. And the correct answer is Phosphorus tribromide.

Explanation:

7 0
3 years ago
Which natural occurrence is an example of a long-term environmental change?
ki77a [65]

Answer:

Tectonic plates

Explanation:

Tectonic plates shifting is long term which creates a short term Earthquake, I hope this helped.

4 0
3 years ago
Carbon disulfide is prepared industrially by reacting carbon with sulfur dioxide according to the above equation. If 70.8 g of c
Rus_ich [418]

Answer:

1.18 moles of CS₂ are produced by the reaction.

Explanation:

We present the reaction:

5C + 2SO₂  →  CS₂  +  4CO

5 moles of carbon react to 2 moles of sulfur dioxide in order to produce 1 mol of carbon disulfide and 4 moles of carbon monoxide.

As we do not have data from the SO₂, we assume this as the excess reagent. We convert the mass of carbon to moles:

70.8 g / 12 g/mol = 5.9 moles

Ratio is 5:1, so 5 moles of carbon react to produce 1 mol of CS₂

Then, 5.9 moles will produce (5.9 . 1) / 5 = 1.18 moles

8 0
3 years ago
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