The mass of Earth is 5.98 x 102 kg, and the mass of a single proton is 1.673 x 10-27 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.
Answers: 2
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The mass of Earth is 5.98 x 102 kg, and the mass of a single proton is 1.673 x 10-27 kg. Assuming Ea...
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