Which of the following descriptions matches the motion shown in the graph. A person leaves home and slows down for a pedestrian.

A person leaves home, picks up speed, and then stops at a red light.

A person is parked at parking lot and then speeds off.

A person walks down the block at a steady speed.

If I already asked this but please help ;v;

A person leaves home, picks up speed, and then stops at a red light.

Explanation:

what are the óptions. pléase list them

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.