The dissociation energy of N2 is 941 kJ/mol. The maximum wavelength of light that has enough energy per photon to dissociate the N2 molecule is ________ nm.
A) 3137
B) 1.27 10-4
C) 1.27 10-7
D) 1.27 105
E) 127
Question 2
An aqueous ethanol solution (400 mL) was diluted to 4.00 L, giving a concentration of 0.0400 M. The concentration of the original solution was ________ M.
A) 0.400
B) 0.200
C) 2.00
D) 1.60
E) 4.00