Sam is comparing the half-life of two isotopes of uranium. The half-life of Uranium-238 is 4.5 × 10° years The half-life of Uranium-233 is 1.6 x 10 years. He computed how much greater the half-life of Uranium-238 is than that of Uranium-233, and his calculator displayed the number 2.814. What is this number in scientific notation? (1 point)
2.81 × 104
4 × 10281
2.81 + 104
2.81 × 10 4
The number 2.814 in scientific notation is 2.81 × 10^0.
To convert a number to scientific notation, you need to move the decimal point until there is only one non-zero digit to the left of the decimal point. In this case, the number is 2.814. To move the decimal point, you need to move it 3 places to the right.
Therefore, the number 2.814 in scientific notation is 2.814 × 10^3.
None of the options provided match this answer exactly. However, the closest one is "2.81 × 10^4".