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Irina18 [472]
3 years ago
6

How many moles of atoms oxygen are in 4.92x10^24 molecules of KNO2?

Chemistry
1 answer:
Nana76 [90]3 years ago
8 0

Answer:

8.17

Explanation:

from

N=n×La

n=N/La

n=4.92×10^24/6.022×10^23

n= 8.17 moles

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Which of the following is not an example of a polymer?
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4 years ago
Which graphic below shows the correct orientation of each water molecule when it is near the cl- ion in the aqueous solution?
andrew-mc [135]
The question is missing the graphics required to answer which I have attached as an image.

There are four different representations of the orientation of water molecules around chloride anion. Let's first analyze the water molecule.

We have H-O-H as the structure of water. The oxygen atom is more electronegative than the hydrogen atoms, which results in a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.

The chloride anion is a negative charge. Therefore, the water molecules should orient themselves with the hydrogen atoms facing the chlorine atom as the partial positive charge on the hydrogen atoms will be attracted to the negative charge of the chlorine atom.

The correct representation is shown in graph 3 which shows all hydrogen atoms facing the chlorine anion.

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4 years ago
Cho recorded the weather in her town for a week. She wrote down her observations in the table below. Mon Tue Wed Thu Fri Sat Sun
SIZIF [17.4K]

Answer:

If this trend continues, the following week will be cooler, and a large amount of rain will fall.

Explanation:

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6 0
4 years ago
Think of Earth's shape. How does the shape of Earth affect the amount of heat different
diamong [38]

Answer: The Earth is an oblate spheroid which is more elongated along the equator.

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8 0
3 years ago
What is the osmolarity of a 0.20 M solution of KCI?
Zanzabum

Answer:

Osmolarity of solution of KCI = 0.40 osmol

Explanation:

Given:

KCL ⇒ K⁺ + Cl⁻

Find:

Osmolarity of solution of KCI

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So,

Osmolarity of solution of KCI = 2 × 0.20

Osmolarity of solution of KCI = 0.40 osmol

6 0
3 years ago
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