We can directly measure the temperature of a cup of coffee, but we cannot directly measure its enthalpy. Which statement

Question

We can directly measure the temperature of a cup of coffee, but we cannot directly measure its enthalpy. Which statement explains why enthalpy cannot be measured directly? Choose the correct
answer.
Enthalpy is a measure of heat that is lost, and this heat cannot be measured during a reaction while
particles are moving.
Temperature has an absolute zero, but enthalpy is a measure of energy transferred as heat, and because
particles always have energy, enthalpy cannot be zero, so we can only measure the change in enthalpy.
Temperature is measured by its effect on an external object with a thermometer, while enthalpy never
O affects substances outside the system, so there is no way to directly measure the energy with a tool such
as a thermometer.
Temperature measures the total kinetic energy of the particles in the coffee, but enthalpy measures the
average kinetic energy, which cannot be found directly and must be calculated.

Kunduz · Accepted Answer

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