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Archy [21]
3 years ago
11

A boy inflated a bunch of balloons while he was outside with an ambient temperature of 26oC. He then took the balloons inside hi

s air-conditioned house where the temperature was 20oC. What do you think happened to the balloons?
Chemistry
1 answer:
Strike441 [17]3 years ago
3 0

Answer:

i think it would be 46C

Explanation:

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When 0.5141 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.823 °C to 29.419 °C
natka813 [3]

Answer:

\Delta_{r}U of the reaction is -6313 kJ/mol

\Delta_{r}H of the reaction is -6312 kJ/mol

Explanation:

Temperature\,\,change= \Delta U = 29.419-25.823 =3.506^{o}C

q_{cal}= C \times \Delta T

=5.861 \times 3.596 = 21.076\,kJ

q_{rxn}= -q_{cal}= -21.076\,kJ

\Delta_{r}U= -21.076 \times \frac{154}{0.5141}= -6313\, kJ/mol

Therefore, \Delta_{r}U of the reaction is -6313 kJ/mol.

The chemical reaction in bomb calorimeter  is as follows.

C_{12}H_{10}(s)+\frac{27}{2}O_{2}(g)\rightarrow 12CO_{2}(g)+5H_{2}O(g)

Number\,of\,moles\Delta n=(12+5)-\frac{27}{2}=3.5

\Delta_{r}H=\Delta E+ \Delta n. RT

=-6313+3.5\times 8.314\times 10^{-3} \times 3.596=-6312\,kJ/mol

Therefore, \Delta_{r}H of the reaction is -6312 kJ/mol.

3 0
3 years ago
NEED HELP! what is a orbital . describe
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Answer:

In chemistry and quantum mechanics, an orbital is a mathematical function that describes the wave-like behavior of an electron, electron pair, or (less commonly) nucleons. An orbital can contain two electrons with paired spins and is often associated with a specific region of an atom.

Explanation:

6 0
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Identify the missing coefficient in the balanced equation and classify the type of reaction.
Montano1993 [528]
I think it is decomposition because it processes in which chemical species break up into simpler parts.
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What is the amount of aluminum chloride produced from 40 moles of aluminum and excess chlorine?
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Answer:

is it 26.98

Explanation:

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Answer:

c

Explanation:

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=1/2*mass*velocity or speed ^2

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2 years ago
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