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1. A solar flare produced 1.6 × 10^12 J of light energy. Assuming monochromatic photons of...

1. A solar flare produced 1.6 × 10^12 J of light energy. Assuming monochromatic photons of wavelength 562 nm, (bright yellow light) how many photons were in the flare?

2. Suppose a sodium atom has a de Broglie wavelength of 1.02 picometer. At what linear speed is it moving, to three significant digits? (The molar mass of Na is 22.990 g/mol)

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