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geniusboy [140]
2 years ago
11

A student is standing with their back facing a campfire. The student notices that their back is much warmer than their chest. Th

ey know that thermal energy is being transferred from the fire and that this method of energy transfer can happen even if no air is present.
This method of energy transfer is —



convection

condensation

conduction

radiation
Chemistry
2 answers:
fiasKO [112]2 years ago
8 0
Conduction because it transfers thermal energy
Mandarinka [93]2 years ago
3 0

Answer:Conduction occurs when energy is passed between objects. The transfer of thermal energy is called heat. Particles of matter are in constant motion.

Explanation:

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A second-order reaction has a rate law: rate = k[a]2, where k = 0.150 m−1s−1. If the initial concentration of a is 0.250 m, what
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Rate law for the given 2nd order reaction is:

Rate = k[a]2

Given data:

rate constant k = 0.150 m-1s-1

initial concentration, [a] = 0.250 M

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Calculations:

The second order rate equation is:

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substituting for k,t and [a] we get:

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Hence the concentration of 'a' after t = 5min is 0.020 M



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