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Rama09 [41]
2 years ago
8

Help me pls rawr uwu SSUsSY

Chemistry
2 answers:
cricket20 [7]2 years ago
7 0
Help 2 what the answer for this?

MAXImum [283]2 years ago
7 0
It would be A divided
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Who preformed the oil drop experiment
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Robert A. Millikan and Harvey Fletcher performed the oil drop experiment.

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Vitamin D is produced in the skin when 7-dehydrocholesterol reacts with UVB rays (ultraviolet B) having wavelengths between
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The energy range expected is 6.6 × 10^-19 J < E < 7.33 × 10^-19 J

The energy of the photon is given by;

E = hc/λ

E = energy of the photon

h = Plank's constant

c = speed of light

λ = wavelength of light

For the upper boundary range;

E = ?

h = 6.6 × 10^-34 Js

c = 3  × 10^8 m/s

λ = 270 × 10^-9

E =  6.6 × 10^-34 Js × 3  × 10^8 m/s / 270 × 10^-9

E = 7.33 × 10^-19 J

For the lower range;

E = ?

h = 6.6 × 10^-34 Js

c = 3  × 10^8 m/s

λ =300 × 10^-9

E =  6.6 × 10^-34 Js × 3  × 10^8 m/s / 300 × 10^-9

E = 6.6 × 10^-19 J

Hence, the energy range 6.6 × 10^-19 J < E <  7.33 × 10^-19 J

Learn more: brainly.com/question/24857760

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2 years ago
A(n) ____ consists of atoms that have a specific number of protons in their nuclei.
Kamila [148]

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Solution i think

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2 years ago
How could measuring the melting point of a solid help decide whether it was a mixture or a compound?
mars1129 [50]

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In most cases, the melting point alone will not enable you to identify a compound. Millions of solid organic compounds, and their melting points, are known. Perhaps 10,000 of these will have the same melting point as your unknown compound.

Hope this helps!

8 0
3 years ago
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