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laiz [17]
3 years ago
14

As a 7 inch candle burns down, its height decreases 1/2 inch each hour. How many hours does it take for the candle to burn compl

etely?
Chemistry
2 answers:
serg [7]3 years ago
8 0

Answer:

14

Explanation:

il63 [147K]3 years ago
4 0

Answer:

As a 7-inch candle burns down, its height decreases 1/2 inch each hour.  How many hours does it take for the candle to burn completely?

Explanation:

It would be 14 because the candle is 7 inches and it loses 1/2 inch each hour.

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Sulfur burns in the air to form 33.6L of sulfur dioxide. (S = 32, O =16, 64g of sulfur dioxide has 22.4L, 32g of oxygen has 22.4
ivolga24 [154]

The mass of oxygen reacted/required in this reaction is obtained as 48g.

<h3>What is stoichiometry?</h3>

The term stoichiometry has to do with mass- volume or mass - mole relationship which ultimately depends on the balanced reaction equation.

Now, we have the reaction; S + O2 ------>SO2

If 1 mole of sulfur dioxide contains 22.4 L

x moles of sulfur dioxide contains 33.6L

x = 1.5 moles of sulfur dioxide.

Since the reaction is 1:1, the number if moles of oxygen required/reacted is 1.5 moles.

Mass of oxygen required/reacted = 1.5 moles * 32 g/mol = 48g

Learn more anout stoichiometry: brainly.com/question/9743981

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in the future, clean energy sources, such as solar power, may be used to create hydrogen fuel true false
borishaifa [10]
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Which block contains 5 orbitals?
exis [7]
D sublevel because the s sublevel has one orbital, the p sublevel has three orbitals, the d sublevel has five orbitals, and the f sublevel has seven orbitals. In the first period, only the 1s sublevel is being filled.
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3 years ago
Use LeChâtelier's principle explain why the concentration of NO at equilibrium increases when the reacuon takes place at higher
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increasing the temperature shifts the equilibrium in the direction of the reaction in which heat is absorbed.

Explanation:

The concentration of NO at equilibrium will increase when the reaction takes place at a higher temperature because increasing the temperature shifts the equilibrium in the direction of the reaction in which heat is absorbed.

The reaction is an endothermic reaction.

                            N₂  + O₂  + heat  ⇄  2NO

According to Le Chatelier's principle, "if any of the conditions of a system in equilibrium is changed the system will adjust itself in order to annul the effect of the change".

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learn more:

Thermodynamics of reactions brainly.com/question/10567109

#learnwithBrainly

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3 years ago
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 C. <span>Regulatory proteins bind to repressor

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