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Chemistry, 08.10.2021 21:20 chinnellepug2149

Which substance is a pure substance? salt water made from 20 g of NaCl dissolved in 80 g of H2O

a 100 g crystal of the mineral apatite (Ca5(PO4)3F)

oxygen in a container existing as O2 and O3

a steel nail made of iron (Fe) and carbon (C)

first CORRECT answer will get 50 points

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Which substance is a pure substance? salt water made from 20 g of NaCl dissolved in 80 g of H2O
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