Answer: technically it is chemical and physical change
Explanation: chemical bc it’s burning and physical bc it’s going from a log to ashes
Answer:
3 Fe₂O₃(s) + H₂(g) ⇒ 2 Fe₃O₄(s) + H₂O(g) ΔH° = -6.00 kJ
Explanation:
Let's consider the following balanced equation.
3 Fe₂O₃(s) + H₂(g) ⇒ 2 Fe₃O₄(s) + H₂O(g)
When 1 mole of Fe₂O₃(s) reacts, 2.00 kJ of energy are evolved. Energy is an extensive property. In the balanced equation there are 3 moles of Fe₂O₃(s), so the evolved energy is:
By convention, when energy is evolved it takes the negative sign. At constant pressure, the thermochemical equation is:
3 Fe₂O₃(s) + H₂(g) ⇒ 2 Fe₃O₄(s) + H₂O(g) ΔH° = -6.00 kJ
where
ΔH° is the standard enthalpy of reaction (heat released at constant pressure)
Answer:
Explanation:
For work to be done, force must be applied to move an object in the direction of the applied force.
Work is the product of force and distance. Workdone describes a change of energy between places.
If we apply force to a body without moving it through a distance, no work is done.
Work is only done when force is applied to move or displace a body.
If we only apply force and no movement occurs, no work is done..
The unit of force is Joules.
Hope this helps you. found this on a website
It would be CH2! you’re just simplifying C4H8, 4 can go into C4 1 time (so we just say C) and 4 can go into H8 2 times (H2)