Answer:
A
Explanation:
temperature increase because burning causes heat therefore the planet heats up from all the fossil fuels burned aka "global warming"
When it passes from one medium
The chemical reaction is expressed as:
2H2 + O2 = 2H2O
To determine the amount of oxygen used in the reaction, we use the amount of water produced and the relation of the substances in the reaction we do as follows:
209 g H2O ( 1 mol / 18.02 g ) ( 1 mol O2 / 2 mol H2O ) ( 32 g / 1 mol ) = 185.57 g O2
Answer:
The answer to your question is ΔE = 0.752 kJ/mol
Explanation:
Data
mass of sample = 0.125 g
Heat capacity = 5.1 x 10² J/°C
ΔT = 11.8°C
ΔE = ?
Formula
ΔE = ΔQ + w
We suppose that work W = 0
ΔQ = mCΔT, then
ΔE = mCΔT
Substitution
ΔE = (0.125)(5.1 x 10²)(11.8)
Simplification
ΔE = (63.75)(11.8)
Result
ΔE = 752.25 J/mol or ΔE = 0.752 kJ/mol
