Answer: The enthalpy change for this reaction is 392 Joules
Explanation:
The balanced chemical reaction is,
The expression for enthalpy change is,
where,
n = number of moles
Now put all the given values in this expression, we get
Therefore, the enthalpy change for this reaction is 392 Joules
<span>c] The golfer sent the golf ball flying toward the cup to score a hole in one.</span>
Answer:
hot air rises because gases expand as they heat up.When air heats up and expands,its density also increases.The warmer,less dense air effectively floats on top of the colder, dense air below it. This creates a buoyant force that causes warmer air to rise.
cold air sinks because it is heavier as its more dense ( because of closely packed molecules) soits harder for them to move and they absorb less energy. Also, gravity pulls on it more strongly.
Hope it helps :)
Answer:
31. 10m/s squared
32. 160 kg/s
I have no clue on 34, sorry!
The boiling point of HF is 19.54°C so it depends on the temperature of your room! Above this temperature it is a gas and below it, it is a liquid