A(n) ______________ is formed by replacing a hydrogen atom in a hydrocarbon with a halogen atom
Fill in the blank(s) with correct word
alkyl halide
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In tempered glass, the stress in outer surface is in a state of _________.
Fill in the blank(s) with the appropriate word(s).
A blend of colors in sunlight’s spectrum
A. Prism or A Diffraction Grating |
B. Annie Jump Cannon |
C. Temperature |
D. Spectroheliometer |
E. Continuous Spectrum |
F. Joseph Van Fraunhofer |
Which telescope will be launched into solar orbit and eventually replace observations made by the Hubble Space Telescope?
a. Hinode b. Kepler c. Chandra d. JWST e. Fermi
An electron in an infinite potential well (a box) makes a transition from the n = 3 level to the ground state and in so doing emits a photon of wavelength 20.9 nm
(c = 3.00 × 108 m/s, h = 6.626 × 10-34J ? s, mel = 9.11 × 10-31 kg) (a) What is the width of this well? (b) What wavelength photon would be required to excite the electron from its original level to the next higher one?