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ololo11 [35]
3 years ago
8

A student attempts to measure the specific heat capacity of an unknown liquid through repeated trials. She measures its specific

heat capacity, in J/g•°C, as 2.14, 2.11, 2.13, 2.12, and 2.11. The specific heat capacity of the liquid should be recorded as -
Chemistry
1 answer:
Goryan [66]3 years ago
4 0

Answer:

2.13

Explanation:

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Why would an aqueous solution of a strong electrolyte conduct electricity better than an aqueous solution of a weak electrolyte?
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Think of a bath sponge. What happens when you squeeze it? How could you explain it from the point of view of the state of the ag
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What happens when it is squeezed is that its volume increases, the pressure of the material increases.

Explanation:

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The standard free energy of activation of one reaction A is 95.00 kJ mol–1 (22.71 kcal mol–1). The standard free energy of activ
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Answer:

The answer to the questions are as follows

Reaction B is 4426.28 times faster than reaction A

(b) Reaction B is faster.

Explanation:

To solve the question we are meant to compare both reactions to see which one is faster

The values of the given activation energies are as follows

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for  B

Ea = 74.20 kJ mol–1 (17.73 kcal mol–1)

T is the same for both reactions and is equal to 298 k

Concentration of both reaction = 1M

The Arrhenius Law is given by

k = Ae^{\frac{-E_{a} }{RT} }

Where

k = rate constant

Ea = activation energy

R = universal gas constant

T = temperature  (Kelvin )

A = Arrhenius factor

Therefore

For reaction A, the rate constant k₁ is given by k₁ = Ae^{\frac{-95000}{(8.314)(298)} }

And for B the rate constant k₂ is given by k₂ = Ae^{\frac{-74200 }{(8.314)(298)} }

k₁ = A×2.225×10⁻¹⁷

k₂ = A×9.850×10⁻¹⁴

As seen from the above Reaction B is faster than reaction A by (A×9.850×10⁻¹⁴)/(A×2.225×10⁻¹⁷) or 4426.28 times

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Why do animals need carbohydrates in their diets
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