Hi there!
To solve, we can use dimensional analysis to convert from molecules to grams.
We must use Avogadro's number (6.02 × 10²³) in converting from molecules to moles.
After converting, multiply by the atomic mass, or grams per mole.
0.08 in the state of Pennsylvania. I imagine it is the same in all of the states though.
Answer: option <span>C: H2O(l) at 10°C changes to H2O(l) at 20°C
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Explanation:
To solve this questions use the fact the temperature is a measure of the average kinetic energy of the particles of a substance.
For a given substance, the higher the temperature the higher kinetic energy, the lower the temperature the lower the kinetic energy
That is a statement derived from the kinetic theory.
The kinetic energy states that as the temperature of a substance increases, so do the average velocity of its particles and so the average kinetic energy.
Thas is why gases have a higher kinetic energy than liquids and liquids have a higher kinetic energy than solids.
The options A<span>: H2O(s) changes to H2O(l) at 0°C and B: H2O(l) changes to H2O(s) at 0°C describe changes at constant temperature, so in them the average kinetic energy does not change.</span><span>
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</span><span>The option C: H2O(l) at 10°C changes to H2O(l) at 20°C, as said, is the right answer because it is a process in which the temperature is increasing, so the average kinetiic energy is also increasing.</span><span>
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</span><span>The option D: H2O(l) at 20°C changes to H2O(l) at 10°C corresponds to a decrease of the kinetic energy, since the temperature is decreasing.
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