26. What is the coefficient of $Fe_2(CO_3)_3$ when the following equation is balanced?
$FeCl_3 + \text{____} Na_2CO_3 \rightarrow \text{____} Fe_2(CO_3)_3 + \text{____} NaCl$
A) 3
B) 6
C) 2
D) 1
E) 4
27. Convert the wavelength of 440 nm violet light into energy.
A) $4.52 \times 10^{-28} J$
B) $4.52 \times 10^{-19} J$
C) $8.75 \times 10^{-23} J$
D) $8.75 \times 10^{-20} J$
E) $2.21 \times 10^{-27} J$
28. An ion of the isotope chlorine-35 has an ionic charge of 1-. How many protons, neutrons, and electrons does it contain? (p = proton, n = neutron, e = electron)
A) 18 p, 17 n, 18 e
B) 17 p, 18 n, 18 e
C) 17 p, 17 n, 35 e
D) 17 p, 35 n, 17 e
E) 35 p, 17 n, 18 e
29. The correct Lewis Dot structure for ozone, $O_3$, is:
A)
B)
C)
D)
E)
