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Chemistry, 22.06.2019 04:00
Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.
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Chemistry, 23.06.2019 12:30
)a children’s liquid cold medicine has a density of 1.23 g/ml. if a child is to take 2.5 tsp in a dose, what is the mass in grams of this dose? (1 tsp = 5 ml)
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Chemistry, 23.06.2019 20:10
Based on the law of superposition, which layer of sedimentary rock is the oldest?
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Which parts of the amino acids X and Y are involved in the formation of a peptide bond? (N-terminus)...
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