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Genrish500 [490]
2 years ago
9

Tell me a funny joke

Chemistry
2 answers:
nasty-shy [4]2 years ago
8 0

Answer:

Explanation:

lol, i tried

dont report, as this is related to math

sp2606 [1]2 years ago
6 0

Answer:

Please mark me brainliest thanks

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Calculate the enthalpy change, ∆H in kJ, for the reaction H2O(s) → H2(g) + 1/2O2(g). Use the following information: : +279.9 kJ
Len [333]

Answer:

+ 291.9 kJ

Solution:

The equation given is as;

H₂O ₍s₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = ?

First, as we know the heat of formation of H₂O ₍l₎ is,

H₂ ₍g₎ + 1/2 O₂ ₍g₎ → H₂O ₍l₎ ΔH = - 285.9 kJ

Now, reversing the equation will reverse the sign of heat as,

H₂O ₍l₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 285.9 kJ

Also, we know that,

H₂O ₍s₎ → H₂O ₍l) ΔH = + 6.0 kJ

Now, adding last two equations,

H₂O ₍l₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 285.9 kJ

H₂O ₍s₎ → H₂O ₍l) ΔH = + 6.0 kJ

-----------------------------------------------------------------------------

H₂O ₍s₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 291.9 kJ

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You are testing an unknown liquid to determine its identity. First you heat the liquid and find that it turns to gas at 80 degre
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Answer: The answer is <u><em>(Boiling Point) </em></u>:)

<u><em /></u>

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Most ecosystems originally get their energy from
nataly862011 [7]
Producers such as plants.
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For an exothermic reaction, what effect will increasing the temperature have on the equilibrium?
VLD [36.1K]
The result of an exothermic reaction is released heat. According the Le Chatelier's principle, increasing<span> the </span>temperature means increasing<span> the amount of products. This means that </span><span> there will be more reactants left at equilibrium.</span>
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What type of intermolecular force occurs between all substances? (4 points)
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Answer:

London dispersion force.

Explanation:

London dispersion forces act between all molecules whether they are polar or non-polar.

8 0
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