Draw Lewis structures for the molecules below. Draw resonance structures where appropriate and label any formal charges. Calculate the bond orders. 1) [SCN]- 2) [HC2O4]- 3) SNF3 4) [S2CO]2- 5) [IO3]- 6) [SO4]2- 7) [S3N3]- (cyclic, every other atom is S) 8) [ClO4]- 9) [NO2]- 10) N2O 11) [ClO4]-

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

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