Answer:
yes yes they do lol
Step-by-step explanation:
We are given
Firstly, we will simplify left side
and we will check whether it is equal to right side
Left side:
Let's assume y left side expression
now, we can take cos on both sides
we can simplify it
Right side:
Let's assume y left side expression
Multiply both sides by -1
now, we can take cos on both sides
we can simplify it
we can see that
both sides cos(y) value is different
so, this is FALSE.........Answer
The amount of heat (in KJ) released when 3.5 moles of CH₄ react is 3115 KJ
<h3>Balanced equation</h3>
CH₄ + 2O₂ -> CO₂ + 2H₂O ΔH = 890 KJ
From the balanced equation above,
1 mole of CH₄ reacted to release 890 KJ of heat energy.
<h3>How to determine the heat energy released by 3.5 moles of CH₄</h3>
From the balanced equation above,
1 mole of CH₄ reacted to release 890 KJ of heat energy
Therefore,
3.5 moles of CH₄ will react ro release = 3.5 × 890 = 3115 KJ of heat energy
Thus, 3115 KJ of heat energy were released from the reaction
Learn more about enthalpy change:
brainly.com/question/11967318
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