Which law of motion is represented in the description: A driver slams on the breaks and the books in the passenger seat fall to the floor of the car.

1st Law of motion
2nd Law of motion
Or
3rd Law of motion

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.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements