At first quarter and last quarter, the Moon lies perpendicular to a line between Earth and the Sun. We see exactly half of the Moon illuminated by the Sun — the other half lies in shadow. Hope it helps :)
Answer:
2.408x10^24 molecules
Explanation:
1mole of a substance contains 6.02x10^23 molecules.
This means that 1mole of C3H8 contains 6.02x10^23 molecules.
Therefore, 4moles of C3H8 will contain = 4 x 6.02x10^23 = 2.408x10^24 molecules
<span>58.6934 +/- 0.0002 u</span>
Cause its the strongest force inside water
