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ollegr [7]
3 years ago
12

Pleas Help me I need to know

Chemistry
1 answer:
Trava [24]3 years ago
5 0

Answer:

There are 32

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You know that an unlabeled water bottle contains at least some water. You measure the freezing point of the unknown substance an
jeyben [28]
You know that an unlabeled water bottle contains at least some water. You measure the freezing point of the unknown substance and find that it freezes at a temperature lower than 0 degrees Celsius at 1 atmosphere pressure, <span>The substance will have a boiling point that is less than 100 degrees Celsius.</span>
6 0
3 years ago
Read 2 more answers
An engineer turns the temperature of a gas down, holding the volume constant at 1,250 L. Initially, the temperature of the gas w
Natalija [7]

Answer:

625=275

240=x

625x=275×240

625x=66000

x=66000/625

x=105 .6

Explanation:

If 625°C gives us 275KPa then 240°C will give us the the sum of 275×240 divided by 625

5 0
2 years ago
Write the chemical equation for the reaction of Fe(II) ion (Fe2 ) with phenanthroline. (Use the abbreviation phen for the phenan
miskamm [114]

Answer:

[Fe(phen)3]2+    Reactants  Fe+2 clear phen white solid   product orange red

mol ratios 1;1 OF fE

Explanation:

8 0
3 years ago
How many atoms are in 4H3BO3
maksim [4K]

1 mole of h3bo3...........6.023*10²³ each h and B and 0 so we will have 3hydrogen+ 1 B+3 oxygen = 7*6.023*10²³ atoms

1 mole .......7*6.023*10²³atoms

4 moles ........x atoms

x=4*7*6.023*10²³.

3 0
3 years ago
Can someone help me with the question in the image
timama [110]

The good ozone protects us from the UV/ harmful radiations whereas bad ozone is an air pollutant.

Explanation:

  • There are two types of ozone layer found in the earth's atmosphere extending from troposphere to stratosphere. They are good ozone and bad ozone.
  • Bad ozone as mentioned earlier it is an air pollutant and found in the ground level of earth, most accurately the troposphere. Bad ozone is formed in the ground level of earth's atmosphere by the reaction between nitrogen oxides and organic compounds which are volatile
  • The Good ozone is found in the stratosphere layer of the earth's atmosphere. They protect us from harmful radiations. Good ozone layer in the stratosphere of the atmosphere is being destroyed by hydrocarbons, CFCs, and human intervention
7 0
3 years ago
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