Nde ba..
how is a pure substance different from a mixture?
a. mixtures cannot be separated by physical means
b. a mixture is made of one substance
c. pure substances cannot be separated by physical means d. a pure substance is heterogeneous

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If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=