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rodikova [14]
4 years ago
11

What is the wavelength (in nm) of light having a frequency of 7.8 × 1013 Hz? What is the frequency (in Hz) of light having a wav

elength of 5.54 × 102 nm?
Chemistry
1 answer:
PSYCHO15rus [73]4 years ago
6 0
Speed of wave = wavelength * frequency
wavelength = speed / frequency where speed of light is 3.0 * 10^8 hence wavelength = 3.79 * 10^-5
frequency = wavelength/speed
= 1883.6
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Status: No credit Points earned: 0.00/1.00
DIA [1.3K]

Answer:

Cu₂O.

Explanation:

copper = 7.298

copper oxide = 8.217

oxygen in copper oxide = .919 g

7.298 g of copper = 7.298 / 63.5 mole of copper

= .1149 mole of copper

.919 g of oxygen = .919 / 16 mole of oxygen

= .0574 mole of oxygen

ratio of mole of copper and oxygen

= .1149 / .0574 = 2

formula of copper oxide = Cu₂O.

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Answer:

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