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777dan777 [17]
3 years ago
9

Use Plank’s constant, 6.626 × 10-34, to solve the following:

Chemistry
2 answers:
Mademuasel [1]3 years ago
7 0

<u>Answer:</u>

B. 3.78 \times 10^{-19} J

<u>Explanation:</u>

Energy (E) = Planck's constant (h) × Frequency (ν)

1 Hertz = 1 s^{-1}  

So Hertz and s^{-1} are equal

E=6.626 \times 10^{-34} Js \times 5.71 \times 10^{14} s^{-1}

(s and s^{-1} gets cancel as both are in the numerator leaving behind Joules)

=37.8 \times 10^{-20} J

(Moving the decimal point to the left one place power of 10 increases from -20 to - 19)

= 3.78 \times 10^{-19} J (Answer)

Kay [80]3 years ago
5 0

Answer:

E= h*frequency

6.626*10^-34)*5.71*10^14)= 3.78*10^-19 J

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