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nirvana33 [79]
3 years ago
13

Why do scientists define systems?

Chemistry
2 answers:
irina [24]3 years ago
4 0

Answer:B

Explanation:

Bad White [126]3 years ago
3 0

Answer:

<em>b</em>

Explanation:

<em>a p e x :)</em>

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The change in enthalpy that occurs in the process of converting reactants to products in a chemical reaction is called the _____
zheka24 [161]

Answer:

∆H or Enthalpy of the reaction

Explanation:

If ∆H is +ve

  • Reaction is exothermic
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If ∆H is -ve

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6 0
2 years ago
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____N2 + ____H2  ____NH3
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N2 + 3H2 + 2NH3

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Oksanka [162]

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One molecule of methane, (the [g] referred to above means it is gaseous form), combined with two oxygen molecules, react to form a carbon dioxide molecule, and two water molecules usually given off as steam or water vapor during the reaction and energy.

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3 years ago
True Lines...!!!!!<br>.<br>.<br>What is photosynthesis??? ​
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<h3><em>The process in which green plants prepare their food in their body by using minerals and carbon dioxide in the presence of sunlight .</em></h3><h3 /><h3 /><h3><em>Hope</em><em> it</em><em> </em><em>is </em><em>helpful</em><em> to</em><em> you</em><em> </em></h3><h3 />
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3. If you have 20.00 moles of potassium carbonate, how many grams of potassium
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