The system follow the Boyle's Law:
Consider the following balanced chemical reaction. 4NH3 + 5O2 → 4NO + 6H2O. For every 1.0 mole of NH3 that reacts, how many mole
1 answer:
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Answer:
The correct answer is "5217 Cal".
Explanation:
The given values are:
Specific heat,
c = 3.76 cal/g°C
Mass,
m = 25.0 g
Initial temperature,
T₁ = 21.5°C
Final temperature,
T₂ = 77.0°C
Now,
The heat energy will be:
⇒
On substituting the given values, we get
⇒
⇒
⇒
Via the half-life equation we have:
Where A is the amount initially and final amount after some time has passed, t is the time elapsed, h is the half life time and so:
Therefore there will be 2.8125 grams left after 140 seconds.