Madrid PAU Chemistry Practice Questions - Madrid PAU Chemistry Examination 2026 (Química 2o Bachillerato) Exam

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What is the energy of a single photon of violet light with a wavelength of 400 nm? (c = 3.00 × 10⁸ m/s, h = 6.626 × 10⁻³⁴ J·s)

4.97 × 10⁻¹⁹ J 2.48 × 10⁻¹⁹ J 7.95 × 10⁻¹⁹ J 1.66 × 10⁻²⁷ J

Correct Answer:

4.97 × 10⁻¹⁹ J

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