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.
1 The moon orbits the earth in a little under 28 earth days. It travels at almost 2,290 miles per hour. 2  About once every 28 days, this is the root of why we use months in our calendars. Inconveniently, since 11 of the 12 months are longer than the moon's cycle of.