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maria [59]
3 years ago
11

A pure substance is:___.

Chemistry
1 answer:
soldier1979 [14.2K]3 years ago
6 0

Answer:

c. composed of only one type of atom or molecule.

Explanation:

Pure substances are the substances that could be made up of only one type of particles and also it contains fixed structure. They would be further categorized as the elements & compounds. It is an elements that only consist of only one type of atom or molecule

Therefore as per the given situation, the option c is the answer

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Write the electron configuration for Br- and state the number of valence electrons. Select one:
Aleks04 [339]

Answer:

1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^62} 4s^{2} 3d^{10} 4p^{5} with 7 valence electrons.

Explanation:

Bromine has 7 unpaired (valence) electrons in its outer shell, and a total of 35 elecrons. Its <em>4s</em> orbital is completely filled with 2 electrons.

The closest answer from the options would be option D.

I hope this helps.

3 0
3 years ago
PLEASE HELP!!!<br> i’m tried and i wanna go to sleep‍♀️
belka [17]
1 Evaporation

2 False…
The more volatile the higher it goes on the graph. The less volatile the lower it
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7 0
3 years ago
The teacher prepares 2.50 liters (l) of a salt solution for a class experiment. how many quarts (qt) are in 2.50 l? (1 l =1.06 q
trasher [3.6K]

The teacher prepares 2.50 liters (l) of a salt solution for a class experiment, in this quantity 2.65 quartz are present.

<h3>What is conversion factor?</h3>

Conversion factor is a quantity which will be multiplied or divide with any other measurement for the conversion of that measurement.

Given that quantity of salt solution = 2.50 L

We know that, 1 L = 1.06 qt

Here conversion factor is 1.06 qt/L as it will be multiplied on given measurement to convert into quartz as:

2.50L = 2.50L × 1.06qt/L = 2.65qt

Hence required value is 2.65qt.

To know more about conversion factor, visit the below link:

brainly.com/question/97386

4 0
2 years ago
Which is a characteristic of a solution?
frez [133]
It is homogeneous mixture of two non reactive substance.
5 0
4 years ago
Which of the following statements is not true about acid rain?
Sergeu [11.5K]
D is incorrect because of the absurdity , And the ozone layer doesn't produce acid rain
4 0
4 years ago
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