Which of the following statements are true?
Check all that apply.

The resistance of a conductor is proportional to the conductivity of the material of which the conductor is composed.
Good conductors of electricity have larger conductivity values than insulators.
Semiconductors have resistivity values that are larger than those of insulators.
The resistance of a conductor is proportional to the resistivity of the material of which the conductor is composed.
A material that obeys Ohm's law reasonably well is called an ohmic conductor or a linear conductor

What are similarities and differences of reflection, refraction, diffraction and absorption?

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon