What is the energy (in J) of an electron in 1.0 nm long, one-dimensional, box if it is in the lowest allo quantum level ? Note: Planck's Constant = h = 6.63x10-34 kg m?/s mass of electron = m= 9.11×1031kg 1J = kg m?/s?

Atomic Ma.. O Register | Pearson . E Bio Sci Peer U ELECTRONIC STRUCTURE AND CHEMICAL BONDING Understanding the meaning of a de Broglie wavelength D 3/5 Imagine an alternate universe where the value of the Planck constant is 6.62607 × 10° J.s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics? object quantum or classical? A mosquito with a mass of 1.8 mg, 9.9 mm long, moving O classical at 2.2 m/s. quantum O classical A car with a mass of 1100. kg, 5.0 m long, moving at 94.0 km/h. O quantum O classical A ball with a mass of 75. g, 13.3 cm wide, moving at 31.8 m/s. O quantur O classical A bacterium with a mass of 10.0 pg, 10.0 pm long, moving at 8.00 um/s. O quantum II

How many moles of iron Fe can be made from 18.7 moles of carbon monoxide CO in the following reaction? Fe2O3 +3CO -->2Fe+3CO2

What is the wavelength of a photon that is required to promote an electron in a Bohr atom from the n=3 up to the n=6 energy level? Express your answer in nm with three sig. fig.