Density
=mass÷volume
=277÷38
=7.29 g/cm3
Dinitrogen pentachloride has covalent bonds
c. x-rays
My answer is that x-rays or gamma rays have the greatest (or highest) frequency waves.
Answer:
The molecular formula of estradiol is:
.
Explanation:
Molar mass of of estradiol = M= 272.37 g/mol
Let the molecular formula of estradiol be 
Percentage of an element in a compound:

Percentage of carbon in estradiol :

x = 18.0
Percentage of hydrogen in estradiol :

y = 24.2 ≈ 24
Percentage of oxygen in estradiol :

z = 2
The molecular formula of estradiol is: 
It would be C because It will have a lower activation energy than Trial A.