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Andrei [34K]
3 years ago
8

Nitric acid with a concentration of 1mol/dm has a pH

Chemistry
1 answer:
goldenfox [79]3 years ago
6 0
Water is neutral with ph 7. when we add water to acidic solution, it will be less acidic. so the pH of acid increases
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A decomposition reaction always breaks a compound down into two pure elements. True or False.
skelet666 [1.2K]

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4 years ago
A laser produces 17.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photons. What is the wavelength of the laser?
Vlad [161]
The unit 'mW' means milliwatts. It is a unit of work. There are 1,000 milliwatts in a 1 Watt of work. In 4 hours, there are 14,400 seconds.

Work= Energy/time
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Solving for energy,
Energy = 244.8 J
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Using the Planck's equation:

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4.053×10⁻¹⁹ J/photon = (6.626×10⁻³⁴ m²·kg/s)(3,00,000,000 m/s)/λ
λ = 4.9×10⁻⁷ m or 49 micrometers


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3 years ago
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