Carbon disulfide has a vapor pressure of 363 torr at 25 °C and a normal boiling point of 46.3 °C.
Vapor pressure or equilibrium vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. It is an indication of the thermodynamic tendency of a liquid to evaporate.
It is the pressure at which a liquid and its vapor are in equilibrium at a given temperature where the vapor is said to "push" against the atmosphere, so the higher the vapor pressure the faster the liquid evaporates.
The vapor pressure is different for different compounds like for Carbon disulfide the vapor pressure is 363 torr at 25 °C.
Thus, Carbon disulfide has a vapor pressure of 363 torr at 25 °C and a normal boiling point of 46.3 °C.
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B. number of electrons already present in the atom.
C. number of neutrons in the nucleus of the atom.
D. availability of an unfilled orbital in the atom.
(1) factory workers from the Northeast to the
Sun Belt
(2) communists deported to Russia as
undesirable aliens
(3) African Americans to northern cities to find
work
(4) refugees fleeing from eastern Europe to the
United States
The Great Migration during World War I refers to the movement of African Americans to northern cities to find work. Therefore, option (3) is correct.
The Great Migration was the movement of millions of African Americans moved from the rural Southern United States to the urban Northeast, Midwest, and West. The great migration was caused by the poor economic conditions for African American people.
The historic change brought by the migration was fueled because the migrants moved to the largest cities in the United States such as New York City, Chicago, Los Angeles, Philadelphia, Cleveland, and Washington, D.C. at a time when these cities had a central social, political, cultural and economic influence over the United States.
African Americans established effective communities of their own. Therefore the Great migration movement was actually sending African Americans to northerncities to find work.
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When electrons absorb energy they are able to move from their ground states up to excited states. The answer is letter B. an example of this is when you light a match. The molecules of the matchstick are in its ground state. When you flick it on the ground or anything hard, it causes its molecules to move into the excited state and thus causing fire.
Answer:
The correct answer is option (2).
Explanation:
Carbon-12:
Atomic Number = 6
Mass number = 12
Nuclear charge = number of protons = +6
Number of electrons = 6
Carbon-14:
Atomic Number = 6
Mass number = 14
Nuclear charge = number of protons = +6
Number of electrons = 6
An atom of carbon-12 and an atom of carbon-14 only differ in their mass number as C-12 has mass number of 12 and C-14 has mass number of 14.