PLEASE HELP An aluminum pop can contains 2.85 x 10^23 atoms and has an average height of 12.3 cm. Assume the distance between the Sun and the Earth is 149.6 million km.

a) Calculate the mass of the can

b) If mole of aluminum pop cans, stacked on top of one another, how many times would it reach from here ( on Earth ) to the sun and back?

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

answer seismograph;