Adouble stranded dna molecule contains 300 adenine molecules and 240 cytosine molecules. how many guanine molecules are in this molecule?

240 molecules

Explanation:

According to the chargaff rules, the amount of adenine  is equal to the amount of thymine  and the amount of guanine  is equal to the amount of cytosine. Therefore:

Now, its easy to conclude:

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.