The mass of Earth is 5.98x10^24 kg, and the mass of a single proton is 1.673x10^-27 kg. Assuming Earth is made entirely of protons, use an order-of-magnitude calculation to estimate the number of protons that make up Earth. Then, calculate the exact number of protons and express the answer in scientific notation with the correct number of significant digits.
+23254 To find the number of protons given those assumptions, divide the mass of the Earth by the mass of a single proton.
As an order of magnitude estimate, divide 1024 by 10-27: 1024 / 10-27 = 1024 - -27 = 10?
For a more exact answer: (5.98 x 1024) / (1.67 x 10-27) = (5.98/1.67) x 1024 - -27 = ?
+23254 To find the number of protons given those assumptions, divide the mass of the Earth by the mass of a single proton.
As an order of magnitude estimate, divide 1024 by 10-27: 1024 / 10-27 = 1024 - -27 = 10?
For a more exact answer: (5.98 x 1024) / (1.67 x 10-27) = (5.98/1.67) x 1024 - -27 = ?
