Which of the following statements is/are correct? Select all that apply. All molecules have dispersion forces.
Polar molecules have dipole-dipole forces.
Nonpolar molecules have dipole-dipole forces.
Hydrogen bonding is present in molecules that contain H, N, O or F.
Hydrogen bonding is present in molecules that have an N-H, F-H or O-H bond.
Molecules that have hydrogen bonding will also have dipole-dipole forces.
Molecules that have dipole-dipole forces will also have hydrogen bonding.
The only intermolecular force present in nonpolar molecules is dispersion.
The only intermolecular force present in polar molecules is dipole-dipole forces.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

answermeridional ;