An atom of sodium has an atomic mass of 23 and an atomic number of 11. the atom contains
23 protons, 23 electrons, and 11 neutrons.
11 protons, 11 electrons, and 12 neutrons.
11 protons, 12 electrons, and 11 neutrons.
23 protons, 12 electrons, and 23 neutrons.

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Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.