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seraphim [82]
3 years ago
12

7. If you fill a balloon with 5.2 moles of gas and it creates a balloon with a volume of 23.5 liters, how many moles are in a ba

lloon at the same temperature and pressure that has a volume of 14.9 liters
Chemistry
1 answer:
Natasha2012 [34]3 years ago
3 0

Answer:

3.3 mol

Explanation:

5.2 mol * 14.9 L / 23.5 L

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Write the Ka expression for an aqueous solution of hydrofluoric acid: (Note that either the numerator or denominator may contain
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Answer:

Ka = ( [H₃O⁺] . [F⁻] ) / [HF]

Explanation:

HF is a weak acid which in water, keeps this equilibrium

HF (aq)  +  H₂O (l)  ⇄  H₃O⁺ (aq)  +  F⁻ (aq)      Ka

2H₂O (l)  ⇄  H₃O⁺ (l)  +  OH⁻ (aq)   Kw

HF is the weak acid

F⁻ is the conjugate stron base

Let's make the expression for K

K = ( [H₃O⁺] . [F⁻] ) / [HF] . [H₂O]

K . [H₂O] = ( [H₃O⁺] . [F⁻] ) / [HF]

K . [H₂O] = Ka

Ka, the acid dissociation constant, includes Kwater.

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The answer is "Incidents"
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What career is when a person anlysis food in laboratory ?
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Your Question,

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Where is the mass of an atom found? Explain.
muminat

Explanation:

Over 99.9% percent of an atom's mass resides in the nucleus. The protons and neutrons in the center of the atom are about 2000 times heavier than the electrons orbiting around it.

Because the electrons are so light by comparison,they represent only a tiny fraction of a percent of the atom's total weight.

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