How many moles of ultra violet photons with a wavelength of 400nm does it take to equal the energy in 1.0 mole of infrared radiation of 1000nm?

Solve the equation using a an equation;

Energy(E)= Nhv= N1hc/I

Where N= no of photos;

H=planks constant ;c= velocity of light and  

I= wave length  

Thus here,

N1hc/I1=N2hc/I2

Or, N1/I1=N2/I2

Let N1=no of photon in 1.0 mol of ir radiation =6.028*10^23;I1=1000 nm

Then N2=?;  I2=400 nm  

Hence,

N2=N1*I2/I1

6.02*10^23*400/1000

=0.4*6.02*400/1000

=0.40 mol of uv

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.