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saw5 [17]
3 years ago
14

I don’t get how to do it

Chemistry
1 answer:
san4es73 [151]3 years ago
3 0

Answer:

Use the x method, cross over each charge.

Explanation:

K^{+1} and Br^{-1} the +1 and -1 cancel each other out, so it will be KBr

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What is the total number of valence electrons un xenon(xe)
Ber [7]

Answer:

8

Explanation:

Hope this helps you :)

6 0
3 years ago
What are the coordinates of the midpoint of the line segment with endpoints (2, 5) and (4, -7)?
Lena [83]

Answer:

(3,2)

Explanation:

The x-co-ordinates above are 2 and 4

Their midpoint is 2+4/2

The y-co-ordinates above are 5 and -1

Their midpoint is 5+(-1)/2  = 2

The overall midpoint is (3,2)

6 0
3 years ago
How much potassium nitrate could be dissolved into 2L of water
miv72 [106K]

Answer:

About 110 g.

Your tool of choice here will be the solubility graph for potassium nitrate, KNO3, in water.

8 0
2 years ago
Read 2 more answers
Use LeChâtelier's principle explain why the concentration of NO at equilibrium increases when the reacuon takes place at higher
Tatiana [17]

increasing the temperature shifts the equilibrium in the direction of the reaction in which heat is absorbed.

Explanation:

The concentration of NO at equilibrium will increase when the reaction takes place at a higher temperature because increasing the temperature shifts the equilibrium in the direction of the reaction in which heat is absorbed.

The reaction is an endothermic reaction.

                            N₂  + O₂  + heat  ⇄  2NO

According to Le Chatelier's principle, "if any of the conditions of a system in equilibrium is changed the system will adjust itself in order to annul the effect of the change".

  • In an endothermic reaction, heat is usually absorbed.
  • We see that in the backward reaction, heat is absorbed.
  • If the temperature of this reaction is increased, the backward reaction is favored more.
  • Since the reactants are combining better, more products NO results.

learn more:

Thermodynamics of reactions brainly.com/question/10567109

#learnwithBrainly

6 0
3 years ago
What is the mole fraction of a nonelectrolyte in an aqueous solution above which the vapor pressure of water is 745 mm Hg at 100
12345 [234]

The mole fraction of a gaseous compound is equal to the ratio of the vapor pressure of the compound to the total pressure of the vessel. In this case, teh vapor pressure of tehe non-electrolyte is 760 - 745 = 15 mmHg. hence the mole fraction is 15 mm Hg / 760 mmHg equal to 0.0197
3 0
2 years ago
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