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The mass of a helium-4 atom is 6, point, 6, 5, times, 10, to the power minus 246.65×10
−24
grams. The mass of an electron is 9, point, 1, 1, times, 10, to the power minus 289.11×10
−28
grams. How many times greater is the mass of a helium-4 atom than the mass of an electron? Write your answer in standard notation, rounding to the nearest tenth.
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Compute the ratio:
(6.65 × 10^−24) / (9.11 × 10^−28) = (6.65/9.11) × 10^4 ≈ 0.729967 × 10^4 = 7299.7.
Answer: 7299.7 times greater.
(6.65 × 10^−24) / (9.11 × 10^−28) = (6.65/9.11) × 10^4 ≈ 0.729967 × 10^4 = 7299.7.
Answer: 7299.7 times greater.
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