â¢ Percentage by mass of each element in a compound â¢ Can be determined from the formula of the compound or by experimental mass analysis of the compound â¢ The percentages may not always total to 100% due to rounding. 100%wholepartPercentage. â¢ Determine the mass of each element in 1 mole of the compound.
The Moon travels around the Earth. The Moon travels around the Earth in a circle called an orbit. How long does it take the Moon to orbit the Earth? The Moon takes about 27 days (27 days, 7 hours, 43 minutes, 11.6 seconds) to go all the way around the Earth and return to its starting position. The Moon's orbit around the Earth is a slightly squashed circle called an ellipse.
As the moon moves around the Earth we can see more or less of. the bright half. The half of the Moon that is not lit up by the sun is in total dark. and we cannot see it at all. It takes 27.3 days for the Moon to orbit the Earth, and the changing shape of the Moon repeats itself every 29.5 days.he moon orbits because of the gravitational pull from a plant. Planets move around the sun because. The lighter object orbits the heavier one, and the Sun is, by far, the hea â¦ viest object in the solar system. 1 person found this useful.