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san4es73 [151]
3 years ago
5

Calculate the molar mass of Cr4(P2O7)

Chemistry
1 answer:
Norma-Jean [14]3 years ago
7 0

Hey there!

Cr₄(P₂O₇)₃

Cr: 4 x 51.996 = 207.984

P: 6 x 30.97 = 185.82

O: 21 x 16 = 336

-------------------------------------

                      729.804 g/mol

The molar mass of Cr₄(P₂O₇)₃ is 729.804 g/mol.

Hope this helps!

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Answer:

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Explanation:

To convert energy yo frequency you need to use:

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And ν is frequency, replacing ν = 5,765x10¹⁴ s⁻¹ ≡ 5,765x10¹⁴ Hz

To convert frequency to wavelength:

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If 1 photon produce 3,820x10⁻¹⁹ J, in mole of photons produce:

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