In chemistry class, Carlos calculated the number of molecules in 100 moles. The calculator displayed the number 6.02E25. What is the number of molecules in 100 moles in scientific notation? 6.02×1025

Question

6.02 times 10 superscript 25 baseline

25×106.02
25 times 10 superscript 6.02 baseline

6.02×25
6.02 times 25

6.02+1025

Answer 1

The correct representation of the number of molecules in 100 moles, based on Carlos's calculation, is:

6.02 × 10²⁵

This is the standard way to express numbers in scientific notation.

To clarify:

• 100 moles of a substance contain \( 100 \times 6.022 \times 10^{23} \) molecules (where \( 6.022 \times 10^{23} \) is Avogadro's number).
• Therefore, \( 100 \times 6.022 \times 10^{23} = 6.022 \times 10^{25} \) molecules, which is commonly rounded to \( 6.02 \times 10^{25} \).

So the answer is 6.02 × 10²⁵.