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Levart [38]
2 years ago
10

Pls help me First person to Ans correctly will get branliest

Chemistry
2 answers:
Virty [35]2 years ago
6 0

Answer:

I think we should heat for it to decompose

Explanation:

when decomposed KCO3 becomes potassium carbonate water and co2

nignag [31]2 years ago
5 0

Answer:

do it by yourself 6637373

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<span>Determine the root-mean-square sped of CO2 molecules that have an average Kinetic Energy of 4.21x10^-21 J per molecule. Write your answer to 3 sig figs.
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E = 1/2 m v^2 

If you substitute into this formula, you will get out the root-mean-square speed. 

If energy is Joules, the mass should be in kg, and the speed will be in m/s. 

1 mol of CO2 is 44.0 g, or 4.40 x 10^1 g or 4.40 x 10^-2 kg. 

If you divide this by Avagadro's constant, you will get the average mass of a CO2 molecule. 

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3 years ago
According to the kinetic-molecular theory, the collision between two ideal gas particles is a result of
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Hope this helps answer your question and have a nice day ahead.
4 0
3 years ago
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