2 years ago

One third of the united states carbon consumption is used to operate what

Chemistry

2 answers:

RideAnS [48]2 years ago

6 0

Answer:

Cars and factories

Explanation:

Montano1993 [528]2 years ago

3 0

Answer:

The carbon returns to the atmosphere as carbon dioxide. Cars, factories, and power plants rely on these fossil fuels to operate. In the year 2000, vehicles were the source of one-third of all carbon dioxide emitted in the United States.

Explanation:

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The work function of palladium (Pd) is 5.22 eV. What is the minimum frequency of light to observe the photoelectric effect from

Ivan

Answer:

1)4×10^13Hz

2) 9.95×10-9J

Explanation:

From the image attached, it is clear that the work function of the palladium metal must first be obtained in joules. Then, the frequency is obtained from E=hf.

The kinetic energy if the photoelectrons is obtained as the difference between the energy of the photon and the work function of the metal.