Question

dina computed the mass of 1,000 protons in grams. the calculator displayed the number 1.67e - 21. what is the mass of 1,000 protons in scientific notation? (1 point) 1.67× grams

Explanation:

Step1: Understand scientific - notation format

Scientific notation is of the form $a\times10^{n}$, where $1\leq a < 10$ and $n$ is an integer. The 'E - 21' on the calculator means $10^{-21}$.

Step2: Write the number in scientific notation

The mass of 1000 protons is $1.67\times10^{-21}$ grams.

Answer:

$10^{-21}$