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Molodets [167]
2 years ago
14

What is the energy of a TV wave that NBC broadcasts, if it has a wavelength of 32 meters?

Chemistry
1 answer:
serg [7]2 years ago
8 0

Answer:

Explanation:

E = hc/λ

h = planck's constant = 6.66 x 10 ^ -34

c = speed of light = 2.98 *10^8 m/s

E = (6.66 x 10 ^ -34 )(2.98 *10^8)/32

  = 19.85 * 10 ^-26

   =0.62 x 10^-26

   = 6.2 x 10^-27 J

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Answer:

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5 0
3 years ago
What is the percent-by-mass concentration of acetic acid (CH3COOH) in a vinegar solution that contains 51.80 g acetic acid in a
Semenov [28]

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\text{Mass of solution}=\text{Density of solution}\times \text{Volume of solution}

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6 0
3 years ago
How many molecules are there in 79g of Fe2O3? how many atoms is this?
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