Trilobites are more common than Sea urchins
The empirical formula for 200 grams of an organic sample which contains carbon,hydrogen, and oxygen is C3H6O
He realized that the physical and chemical properties of elements<span> were related to their atomic mass in a '</span>periodic<span>' way, and </span>arranged<span> them so that groups of </span>elements<span> with similar properties fell into vertical columns in </span>his table<span>.
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B: nothing the color of the solution when heated
Answer: D. Potassium bromide