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siniylev [52]
3 years ago
8

An electric iron is used to remove wrinkles from clothes the electric iron is made of metal which property of this substance is

most useful for this application
boiling point

density

electrical conductivity

thermal conductivity
Chemistry
1 answer:
Jobisdone [24]3 years ago
5 0

thermal conductivity

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Why is large-scale nuclear fission a rare phenomenon on Earth? A. There isn't enough energy to start a chain reaction in nature.
siniylev [52]

The answer is; C

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Compared to an ordinary chemical reaction a fission reaction will
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Hydrogen sulfide decomposes according to the following reaction, 2 H2S(g) → 2 H2(g) + S2(g) where ∆S = +78.1 J/K, ∆H = +169.4 kJ
arlik [135]

Answer:

The reaction is spontaneous when T > 2170 K.

Explanation:

The spontaneity of a reaction is related to the standard Gibbs free energy (ΔG°). When ΔG° < 0 the reaction is spontaneous. ΔG° is related to the standard enthalpy (ΔH°) and the standard entropy (ΔS°) through the following expression:

ΔG° = ΔH° - T.ΔS°

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T is the absolute temperature

The reaction is spontaneous when ΔG° < 0, that is,

ΔH° - T.ΔS° < 0

ΔH° <  T.ΔS°

T > ΔH°/ΔS° = (169.4 × 10³ J)/(78.1 J/K) = 2170 K

The reaction is spontaneous when T > 2170 K.

7 0
4 years ago
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Answer:

hope this helps

Explanation:

it will tell you what you need to know

Download pdf
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