The heat of vaporization of water at 100.0
is 2,256 kJ/kg. What is the heat of vaporization of water in cal/gm?
A. 365.3
B. 418.6
C. 497.2
D. 538.9
E. 684.1
D. 538.9
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An image of Mars taken with the Hubble Space Telescope shows a small Northern polar cap and a large Southern Polar cap. What season is it in the Northern hemisphere?
A) spring B) fall C) summer D) winter
The planetary model of the hydrogen atom consists of an electron in a circular orbit about a proton. The motion of the electron of charge 1.60 × 10^?19 C creates an electric current. The radius of the electron orbit is 5.30 × 10^?11 m and the electron's velocity is 2.20 × 10^6 m/s. What is the magnetic field strength at the location of the proton?
Air pollution results from ______________ combustion of ______________ fuels
Fill in the blank(s) with correct word
During a solar eclipse, if you moved into the__________, you would be in partial shadow and would also see part of the Sun peeking around the edge of the Moon
A) umbra B) south point C) penumbra D) north point