A Single Pulse of a Laser Yields an Average of 5.00

Multiple Choice

A single pulse of a laser yields an average of 5.00 × 10¹⁸ photons with $\lambda$ = 633 nm.If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses need to melt 10.0 g of ice?

A) 38300
B) 3830
C) 3340
D) 2120
E) 212