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Crank
3 years ago
13

What was one main point of Dalton's atomic theory

Physics
2 answers:
katovenus [111]3 years ago
5 0
Indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.
goblinko [34]3 years ago
4 0
All matter is composed of atoms, indestructible building blocks.
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A closed system’s internal energy changes by 178 J as a result of being heated with 658 J of energy.
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Internal energy of the system changes by ΔE = 178 J.
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According to the first law of thermodynamics, 
ΔE = Q + W
178 = 658 + W 
∴ W = 178-658 = -480 J

Minus sign indicates that work is done by the system. 
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Example of nuclear fission and nuclear fusion​
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