The correct name of H2CO3 is ________.
A) hydrogen carbide
B) hydrogen carbonate ion
C) carbonate ion
D) carbonic acid
E) carboxylic acid
Question 2
A mole of red photons of wavelength 725 nm has ________ kJ of energy.
A) 2.74 10-19
B) 4.56 10-46
C) 6.05 10-3
D) 165
E) 227