I know it this one is easy I had the same one.
Answer:
Exothermic Reaction
Explanation:
The test tube feels hot as a result of an increase in temperature of the surroundings. This means that due to the reaction between zinc metal and hydrochloric acid, heat was released. The hot test tube indicates that this is an exothermic reaction.
In an acidic solution, the rate change if Sucrose fructose and glucose is changed to 0.5 M will be Rate = k[H⁺][1.51M] for sucrose,
Rate = k[H⁺][0.61M] for glucose and Rate = k[H⁺][0.6 M] fructose.
<h3>What is the breakdown of sucrose?</h3>
Sucrose is a type of sugar that is made by adding fructose and glucose or the breakdown of fructose will be in the form of glucose and fructose always at different levels of concentration.
In the given acidic solution if the concentration of sucrose changes from 0.01 to 0.5 then both have to add to give the total rate of change in the given reaction and it will be 1.51M sucrose, 0.61M for glucose, and 0.6 M fructose.
Therefore, Rate = k[H⁺][1.51M] for sucrose, Rate = k[H⁺][0.61M] for glucose and Rate = k[H⁺][0.6 M] fructose for an acidic solution, the rate change if Sucrose fructose and glucose is changed to 0.5 M.
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The Earth is tilted, so it will be lit by different parts of the Sun as it orbits.
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>.