What does the zeroth law of thermodynamics allow us to define?
2 answers:
Explanation:
Zeroth law of thermodynamics states that when two thermodynamic systems are in equilibrium with a third system then all of them are in thermal equilibrium with each other.
For example, system A is in thermal equilibrium with system B and system B is in thermal equilibrium with system C then it means system A is also in thermal equilibrium with system C.
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Answer:
B. CA, 14
Explanation:
Atoms of elements contain small particles known as electrons, neutrons, and protons. The nucleus of an atom is made up of neutrons and protons which are at the center of the atom. Electrons on the other hand surrounds the nucleus. Electron has negative charge while proton has a positive charge. The number of neutrons is equivalent to the number of protons . In addition, the number of protons is equal to mass number minus the number of electrons.
For the compound , it can be broken down into
and
. Its ion has a mass of 34 and 18 electrons which means it has already lost 2 electrons.
Therefore:
For the given element, the number of electrons is 18+2 = 20 electrons.
The number of protons = 34 - 20 = 14.
And the number of neutrons is 14.
Only option B has the correct answer.