Answer:
Just as the Moon orbits the Earth because of the pull of Earth's gravity, the Earth orbits the Sun because of the pull of the Sun's gravity. ... This happens because the Earth has a velocity in the direction perpendicular to the force of the Sun's pull.
Explanation:
Answer:
Explanation:
It is density.
I do hope I helped you! :)
We have to know the solubility of CaF₂.
The solubility of CaF₂ is: (c) 2.1 x 10-4 Molar
The general expression of solubility product of any sparingly soluble salt (having solubility S) with formula
is:
.
For the compound, CaF₂, x=1, y=2 So,
=
=4S³= 3.9 x 10-11 (Given)
S³=
S³=9.75 X 
S= 2.1 X
Molar
Molarity is mole divided by volume in litres.
0.5mol divide by 0.5L = 1M