Answer:
A liquid's vapor pressure is directly related to the intermolecular forces present between its molecules. The stronger these forces, the lower the rate of evaporation and the lower the vapor pressure.
Explanation:
Answer: A thermal conductor is a material that allows energy in the form of heat, to be transferred within the material, without any movement of the material itself.
Explanation:
Answer:
a) 50 protons, 50 electrons, 75 neutrons
Explanation:
How many protons, electrons, and neutrons does an atom with atomic number 50 and a mass number of 125 contain?
a) 50 protons, 50 electrons, 75 trons
b) 75 electrons, 50 protons, 50 neutrons
c) 120 neutrons, 50 protons, 75 electrons
atomic number IS the number of protons
atomic mass IS the total of protons + neutrons
so 50 protons
125-50 = 75 neutrons
in a neutral atom,
number of negative electrons = number of positive protons
a) 50 protons, 50 electrons, 75 neutrons
Answer:
O Charles's law
.
Explanation:
Hello!
In this case, since the use of gas laws leads to a good comprehension of how gases behave towards volume, pressure and temperature, we can review that the Boyle's law explains the pressure-volume variation, the Dalton's law the partial pressure effect, the Gay-Lussac's law that of pressure and temperature and the Charles' that of temperature and volume at constant pressure; thus, the answer for the asked question is:
O Charles's law
Best regards!
Answer:
Semiconductors are poor conductors at low temperatures, but their resistance decreases with increasing temperature.
Explanation:
A semiconductor can be defined as a crystalline solid substance that has its conductivity lying between that of a metal and an insulator, due to the effects of temperature or an addition of an impurity. Semiconductors are classified into two main categories;
1. Extrinsic semiconductor.
2. Intrinsic semiconductor.
The statement which best describes the electrical conductivity of metals and semiconductors is that semiconductors are poor conductors at low temperatures, but their resistance decreases with increasing temperature.
This ultimately implies that, semiconductors are typically an insulator (poor conductor) at low temperatures and a good conductor at high temperatures.
Additionally, conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.
