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podryga [215]
3 years ago
12

What volume of oxygen gas is needed to completely combust 0.202L of butane (C4H10) gas?

Chemistry
1 answer:
saveliy_v [14]3 years ago
4 0

Answer:

look at the file :)

Explanation:

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Answer:

c

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Explain why the coin is able to float on top of the water in this glass.
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A coffee cup calorimeter will not be used to directly measure the enthalpy of magnesium combustion because
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A coffee cup calorimeter is great for measuring heat flow in a solution, but it can't be used for reactions that involve gases since they would escape from the cup. The coffee cup calorimeter can't be used for high-temperature reactions, either, because they would melt the cup.

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Which of the following solutions would have [Fe3+] = 0.020 M?
Shalnov [3]

Answer:

None of the given options

Explanation:

Let's go case by case:

A. No matter the volume, the concentration of Fe(NO₃)₃ (and thus of [Fe³⁺] as well) is 0.050 M.

B. We can calculate the moles of Fe₂(SO₄)₃:

  • 0.020 M * 0.80 L = 0.016 mol Fe₂(SO₄)₃

Given that there are two Fe⁺³ moles per Fe₂(SO₄)₃ mol, in the solution we have 0.032 moles of Fe⁺³. With that information in mind we <u>can calculate [Fe⁺³]</u>:

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C. Analog to case A., the molar concentration of Fe⁺³ is 0.040 M.

D. Similar to cases A and C., [Fe⁺³] = 0.010 M.

Thus none of the given options would have [Fe⁺³] = 0.020 M.

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2 years ago
What is the relationship between elements ,atoms ,and compounds
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