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3 years ago

15

What kind of intermolecular forces act between a hydrogen cyanide molecule and a chloromethane molecule? note: if there is more

than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force?

1 answer:

solmaris [256]3 years ago

3 0

London dispersion forces, dipole forces

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Click on the Delta H changes sign whan a process is reversed button within the activity and analyze the relationship between the

OleMash [197]

Answer:

ΔH = - 44.0kJ

Explanation:

H2O(l)→H2O(g), ΔH =44.0kJ

In the reaction above, liquid water changes to gaseous water. This occurs through a process known as boiling. This process requires heat, hence the ΔH is positive.

If he reaction is reversed, we have;

H2O(g)→H2O(l)

In this reaction, gaseous water changes to liquid water. This process is known as condensation. The water vapor loses heat in this reaction. Hence ΔH would be negative but still have the same value.

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3 years ago

how many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

andrezito [222]

Answer:

Silver has to give up one electron.

Explanation:

Silver is a transition element and has a partially filled 4d- orbital having 9 electrons and a 5s orbital having 2 electrons in it. In order to achieve stability, silver must have completely filled d-orbital having a maximum number of 10 electrons in it.

Therefore, one electron from 5s orbital jumps to 4d orbital to make it stable. Now, 5s orbital has only one electron, and it will be easy for silver to lose this electron to attain a stable electronic configuration.

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3 years ago

I’ll give Brainliest please answer also i know this isn’t chemistry but brainly doesn’t have science

Marysya12 [62]

the answer would be iron. divide mass by volume to get density.

6 0

3 years ago

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1. A sample of gas has a volume of 6.20 L at 20°C at a pressure of 1.10 atm. What is its volume at the same temperature and at a

nadya68 [22]

Answer:

7.37 L is the new volume

This can be understood as a system that maintains its constant T ° and if the moles of the gas are not modified, the pressure varies inversely proportional to the volume.

Explanation:

We can apply the Ideal Gases Law, to solve this problem. Moles are the same in both cases, the T° also keeps on constant.

P . V = n . R . T For this first situation

P . V = n . R . T For the second situation

V = n . R . T / P

n . R . T will be the same, because n is the number of moles, T means T° and R is a physic constant, so for the first case we can define:

P₁ . V₁, and for the second case, P₂ . V₂

We match both equations, and we replace data

6.20L. 1.10 atm = 0.925 atm . V₂

(6.20L. 1.10 atm) / 0.925 atm = V₂

V₂ = 7.31 L

If the volume decreases, the pressure increases more because the molecules collide more with the walls of the container but the opposite happens where if the volume increases (<u>as in the case of exercise</u>), the pressure will be lower. Gas molecules will not collide so much with the walls

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4 years ago

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Describe in short about the paper chromatography.

Paul [167]

Answer:

Paper chromatography is a method used to distinguish or separate coloured substance mixtures.

In the image, take an example of colured chemical placed in a glass beaker. If a paper is placed in that chemical, coloured spots are separated and displayed on the chromatogram.

It was founded in 1944 A.D by a scientist called Erwin Cargaff.

8 0

2 years ago