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mars1129 [50]
3 years ago
5

_________ refers to the total energy of a system.

Chemistry
2 answers:
makkiz [27]3 years ago
6 0

Answer:   a. Enthalpy

Explanation:

inna [77]3 years ago
3 0
    Enthalpy refers to the total energy of a system. Hope this helped!
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Energy from sources that are constantly being formed is non-renewable energy.
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If they are constantly being formed then, they are called renewable energy. So the statement above is false. B.


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Which unit can be used to express the rate of a reaction?
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<span>A) mL / s

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Balance the equation<br> N2O5 + H2 -&gt; NH3 + H2O
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3 years ago
How many moles of methane are produced when 85.1 moles of carbon dioxide gas react with excess hydrogen gas?
tino4ka555 [31]

Taking into account the reaction stoichiometry, 340.0 moles  of methane are produced when 85.1 moles of carbon dioxide gas react with excess hydrogen gas

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

CO₂ + 4 H₄  → CH₄ + 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • CO₂: 1 mole
  • H₄: 4 moles  
  • CH₄: 1 mole
  • H₂O: 2 moles

<h3>Moles of CH₄ formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 1 mole of CO₂ form 4 moles of CH₄, 85.1 moles of CO₂ form how many moles of CH₄?

moles of CH_{4} =\frac{85.1 moles of CO_{2}x4 moles of CH_{4} }{1 moles of CO_{2}}

<u><em>moles of CH₄= 340.4 moles</em></u>

Then, 340.0 moles  of methane are produced when 85.1 moles of carbon dioxide gas react with excess hydrogen gas

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

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1 year ago
Define the term pH in acid and base​
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Answer:

a measure of how acidic/base water is.

Explanation:

hope it's helpful (◕ᴗ◕✿)

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2 years ago
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