Physics, 12.11.2019 07:31 ashtor1943
Which of the following is not true regarding neon lights?
a. light is emitted as electrons move through a gas in a tube.
b. all neon lights are colored by the color of the tubing.
c. neon lights may contain other gases, such as helium or krypton.
d. each kind of gas produces its own distinctive color.
Answers: 1
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Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.
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1. how much energy is needed to raise the temperature of 40.0 g of argon from 25ď°c to 40ď°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?
Answers: 3
Which of the following is not true regarding neon lights?
a. light is emitted as electrons mo...
a. light is emitted as electrons mo...
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