Answer:
D. The model can be observed from the classroom more easily
Explanation:
From the concept of using wire coil to model and the concept of using spring coil to measure, we can come to the conclusion that the correct answer is Option D.
A negative ΔH and ΔS suggests that the reaction is exothermic and the leads to a decrease in the entropy of the system. In this case, the spontaneity of the reaction depends on the temperature and reaction is spontaneous at low temperature and non-spontaneous at a high temperature.
Answer:
Yes.
Any physical change is reversible.
Answer:
6 mol of A₂B₃ are produced
Explanation:
This is the reaction:
4A + 3B₂ → 2A₂B₃
4 moles of A react with 3 moles of B to produce 2 moles of A₂B₃.
Ratio is 4:2. Therefore:
4 moles of A will produce 2 moles of A₂B₃
12 moles of A, would produce (12 .2) / 4 = 6 moles