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.
The moon orbits the earth in a little under 28 earth days. It travels at almost 2,290 miles per hour. Coincidentally, the moon's rotation period is also a little under 28 days, meaning the same face points toward the earth during its entire orbit. The English word month is derived from moonth, which was how long the moon was observed to take to return to a specific phase.