Question

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
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**.