Astudent has two identical sheets of paper. he crumples one up into a small
ball. if he drops the sheet of paper and the ball of paper off a building at the
same time, which will reach the ground last and why?
o
a. the ball of paper, because it has less surface area.
o
b. the ball of paper, because it is more affected by gravity.
o
c. the sheet of paper, because it has more surface area.
o
d. the sheet of paper, because it is more affected by gravity.

B. The ball of paper. Because it is heavier, and smaller, it will fall quicker, because of gravity affecting it. And the sheet of paper since it is light, and wider, it will stay floating until it reaches the ground.

I really hope this helps you! If my answer is correct, could you please mark me brainliest, it would really help me.

Explanation:

Answe: The ball of paper hits the ground first because it has less surface area

Hope this helps !!

the grams   of   barium that   are in   2.3 x 10^23   atoms of barium   is   52.4 g (answer c)

    calculation

mass = moles   of ba   x molar   mass of ba

  molar mass of ba from periodic table=   137.3 g/mol

  use the   avogadro's law   constant   to   calculate the moles of barium

  that   is     1 mole =   6.02   x 10^23 atoms

                    ? moles = 2.3 x 10^23   atoms

by cross   multiplication

=(1 mole   x 2.3x 10^23 atoms)   / 6.02   x10^23 atoms)=   0.382   moles

mass   is therefore = 137.3   g/mol x 0.382 mol = 52.4 ( answer c)

explanation: