A mass of 100 g of NaNO3 is dissolved in 100 g of water at 80ºC. As the solution is cooled, at what temperature should solid first appear in the solution? 20 deg C 50 deg C 35 deg C 45 deg C

Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

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