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mihalych1998 [28]
3 years ago
6

Combustion reactions are characterized by the reaction of a substance with

Chemistry
2 answers:
pashok25 [27]3 years ago
8 0

Answer: Combustion reactions are characterized by the reaction of a substance with O2 to form one or more oxygen, often water. Combustion reactions emit heat, and they are important because most of society's energy is derived from them. Ex.: CH4 (g) + 2O2 (g) -- CO2 (g) + 2H2O (g)

Explanation: I hope thus helps UwU

makvit [3.9K]3 years ago
8 0
^ They are CORRECT.
Just looked over it
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A 19.0 L helium tank is pressurized to 26.0 atm. When connected to this tank, a balloon will inflate because the pressure inside
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Answer:

The new volume of the balloon when the pressure equalised with the pressure of the atmosphere = 494 L.

The balloon expands by am additional 475 L.

Explanation:

Assuming Helium behaves like an ideal gas and temperature is constant.

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P₁V₁ = P₂V₂

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V₂ = ?

P₁V₁ = P₂V₂

(26 × 19) = 1 × V₂

V₂ = 494 L (it is assumed the balloon never bursts)

The new volume of the balloon when the pressure equalised with the pressure of the atmosphere = 494 L.

The balloon expands by am additional 475 L.

Hope this Helps!!!

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Atoms can be divided more so thats not true. atoms from the same element arent all nesacarly identical because of isotopes
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