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zepelin [54]
1 year ago
7

A sample of a gas has volume 78.5ml at 318.15 K.. What Volume at will the sample occupy at 273. 15 K when the pressure is held c

onstant?​
Chemistry
1 answer:
DochEvi [55]1 year ago
7 0

Charles’ Law

V₁/T₁=V₂/T₂

78.5/318.15=V₂/273.15

V₂=67.4 ml

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densk [106]

Answer:

26.3 moles of O₂ are needed to react completely with 35.0 mol of FeCl₃

Explanation:

To determine the number of moles of O₂ that are needed to react completely with 35.0 mol of FeCl₃, it is possible to use the reaction stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction),  and rule of three as follows: if 4 moles of FeCl₃ react with 3 moles of O₂, 35 moles of FeCl₃ with how many moles of O₂ will it react?

molesofO_{2} =\frac{35 moles of FeCl_{3}*3 moles of O_{2}  }{4 moles of FeCl_{3}}

moles of O₂= 26.25 ≅ 26.3

<u><em>26.3 moles of O₂ are needed to react completely with 35.0 mol of FeCl₃</em></u>

7 0
3 years ago
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Ronch [10]

Answer:

B

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5 0
2 years ago
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Ann [662]

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zubka84 [21]

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olganol [36]
I believe <span>Na2SO3  is the solution to the problem.</span>
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2 years ago
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