The compound Mg(OH)2 is commonly known as
a. Epsom salt.
b. Alka-Seltzer.
c. smelling salts.
d. milk of magnesia.
d
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Without telescopes or other aid, we can look up and see the Moon in the night sky because it
A) emits thermal radiation. B) reflects infrared light. C) reflects visible light. D) glows through radioactive decay. E) emits visible light.
Which major division of chemistry deals
specifically with the identification of the substances present in a given sample of matter, and also with the determination of how much of each substance is present? a)biochemistry b)physical chemistry c)analytical chemistry d)organic chemistry
Inside the nucleus, the weakest of the four fundamental forces is
A) the electromagnetic force. B) the gravitational force. C) the weak nuclear force. D) the strong nuclear force.
____ is absorbed by water in Earth's atmosphere and requires that telescopes for observing at these wavelengths be placed on mountain tops or in space
a. Infrared radiation b. Ultraviolet radiation c. Radio wave radiation d. X-ray radiation e. Visible light