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Aliun [14]
3 years ago
7

Consider the chemical equations shown here. 2 equations. 1: 2 upper H subscript 2 (g) plus upper O subscript 2 (g) right arrow 2

upper H subscript 2 upper O (g). Delta H 1 equals negative 483.6 kilojoules divided by 2 equals negative 241.8 kilojoules per mole. 2: 3 upper O subscript 2 (g) right arrow 2 upper O subscript 3 (g). Delta H 2 equals 284.6 kilojoules divided by 2 equals 142.3 kilojoules per mole. What is the overall enthalpy of reaction for the equation shown below? 3 upper H subscript 2 (g) plus upper O subscript 3 (g) right arrow 3 upper H subscript 2 upper O (g).
Chemistry
1 answer:
vova2212 [387]3 years ago
7 0
-867.7 kJ just did it
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If the half-life of a radionulide is 1 month, what percent remains after 4 months?
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Answer:

6.25% of the original amount

Explanation:

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after 1 month= 50%

after 2 months= 25%

after 3 months= 12.5%

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In the quantum mechanical model, what two words do they use to describe<br> particles?
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Answer:

This question is incomplete

Explanation:

This question is incomplete but one can assume the answer from the definition of quantum mechanics. Quantum mechanics is the science that describes particles in nature at the atomic and subatomic particle (electron, proton and neutron) level. Thus it can be assumed that atoms and subatomic particles are used to broadly describe particles.

5 0
3 years ago
When 0.105 mol propane, C3H8 is burned in an excess of oxygen, how many moles of oxygen are consumed? The products are carbon di
torisob [31]

<u>Answer:</u> The amount of oxygen gas consumed is 0.525 moles

<u>Explanation:</u>

We are given:

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Learn more about condensation here : brainly.com/question/1268537

#SPJ4

4 0
1 year ago
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