Why does the moon appear to move toward the west in the sky?

A) The rotation of the Moon changes its position in the sky.
B) Earth orbits at a slower rate than the rate at which the Moon orbits Earth.
C) Earth rotates at a faster rate than the rate at which the Moon orbits Earth.
D) The orbiting of the Earth around the Sun causes a change in the position of the Moon in the sky.

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:

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

i think that the answer is c