To find the mass of 1,000 protons in scientific notation, we need to convert the calculator's result from standard notation to scientific notation. The calculator displayed 1.67E - 21, which indicates \(1.67 \times 10^{-21}\) grams.
To compute the mass of 1,000 protons:
- The mass of one proton is approximately \(1.67 \times 10^{-27}\) grams.
- Therefore, for 1,000 protons, we multiply the mass of one proton by 1,000:
\[ 1,000 \times (1.67 \times 10^{-27}) = 1.67 \times 10^{-24} \text{ grams} \]
Thus, the mass of 1,000 protons in scientific notation is:
\[ 1.67 \times 10^{-24} \text{ grams} \]
So the answer is:
1.67 X 10^-24 grams
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