Meter, everthign else is a power of 10 of it
Answer:
What would help Jake INCREASE the rate at which his Gatorade dissolves? Explanation: Stirring the mixture helps to expose more solute to solvent, thus increasing the rate of dissolving.
Explanation:
A precipitate is defined as an insoluble substance that emerges upon mixing of two aqueous solutions.
For example,
As precipitate is a solid and it is represented by (s). And, an aqueous solution is represented by (aq).
So, the products of the given reactants will be as follows.
Hence, we can conclude that out of the given options, these two equations will produce a precipitate.
Answer:
a) ΔU = 370 KJ
b) Endothermic
Explanation:
a)
The change in energy of the mixture can be given by first law of thermodynamics as:
ΔQ = ΔU + W
ΔU = ΔQ - W
where,
ΔQ = change in heat energy of system
ΔU = Change in internal energy of gases
W = Work done on gases = - 155 KJ
For an isobaric process (i.e constant pressure) we know that:
ΔQ = change in enthalpy = ΔH
ΔQ = 215 KJ
Therefore, using values in the equation, we get:
ΔU = 215 KJ - (-155 KJ)
<u>ΔU = 370 KJ</u>
b)
Since, the enthalpy of products is greater than the reactants. Therefore, this is an <u>endothermic reaction</u>.