Concept:The mole is the SI base unit used to measure the amount of a substance. By rigid scientific definition, one mole of any substance contains exactly Avogadro's number of fundamental particles.
Formula:$$ N_A = 6.022 \times 10^{23} \text{ mol}^{-1} $$
Solution:- Avogadro's constant, denoted by \( N_A \), is a universally established physical constant.
- Its accepted value for most general chemistry calculations is rounded to \( 6.02 \times 10^{23} \).
- This implies that 1 mole of carbon atoms contains \( 6.02 \times 10^{23} \) atoms, and 1 mole of water contains \( 6.02 \times 10^{23} \) molecules.
Why other options are incorrect:- \( 6.03 \times 10^{23} \): The decimal portion is inaccurate.
- \( 6.02 \times 10^{-23} \): The exponent is negative, which implies a fraction of a single particle, which is impossible.
- \( 6.01 \times 10^{-19} \): Completely wrong value and exponent.
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