Mineral sample #1 is ____________.
Calcite - CaCO3
Dolomite - CaMg(CO3)2
Fluorite - CaF2
Calcite - CaCO3
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While ionized hydrogen glows bright red, neutral hydrogen is transparent visibly and best studied with 21-cm radio waves
Indicate whether the statement is true or false
Uranus and Neptune have methane clouds but Jupiter and Saturn do not. Which factor explains why?
A) Temperatures on Jupiter and Saturn are too high for methane to condense. B) Jupiter and Saturn do not contain any methane gas. C) The rapid rotation of Jupiter and Saturn prevents methane clouds from forming. D) The stronger gravity on Jupiter and Saturn pulls methane downward so that it can't form clouds.
A solution in which more of the solute could be dissolved at the same temperature is called a(n) ______________ solution
Fill in the blank(s) with correct word
Two identical freight cars roll without friction towards each other on a level track. One car rolls at 2 m/s and the other car rolls at 1 m/s. After the cars collide, they couple and roll together with a speed of
A) 0.5 m/s. B) 0.33 m/s. C) 0.67 m/s. D) 1.0 m/s. E) none of the above