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Chemistry

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Dane Bernhard

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Cards in this guide (9)
Atoms with certain characteristics are radioactive Which is least likely to be radioactive

all atoms with an atomic number under 40

How many hydrogen atoms are in 1 mole

6.022 x 1023

A heat engine is a device that converts work into heat

No, a heat engine is not a device that converts work into heat. It is the opposite, which means it is a device that converts heat into work.

Entropy is the amount of heat a system releases

False

The first law of thermodynamics which is closely related to the law of conservation of energy states that

energy can be transformed in different ways but can never be created or destroyed.

Which item requires the least energy to increase its temperature lounge chair sand or water Explain your answer in terms of this item's specific heat

Sand needs least energy to increase the temperature as its specific heat is very low compared to that of water. Water needs more energy to increase its temperature as its specific heat capacity is higher.

Which of the following is true of an isothermal process Temperature is constant W equals Q ΔU equals 0 Pressure is constant

Temperature is constant.

Which of the following are formulations of the second law of thermodynamics

Mdufbrurir

I’m a nuclear reaction which of the following must be conserved

Charge

The count of nucleons

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