Answer:
0.0970 moles NaCl
Step-by-step explanation:
To find the amount of moles, you need to multiply the mass (grams) by the molar mass of NaCl. The molar mass exists as a ratio that compares the mass of a substance per every 1 mole. The molar mass is made up of the individual atomic masses of every element in the molecule. The final answer should have 3 sig figs like the given value (5.67 = 3 sig figs).
Atomic Mass (Na): 22.770 g/mol
Atomic Mass (Cl): 35.453 g/mol
Molar Mass (NaCl): 22.990 g/mol + 35.453 g/mol
Molar Mass (NaCl): 58.443 g/mol
5.67 grams NaCl 1 mole
---------------------------- x ------------------------- = 0.0970 moles NaCl
58.443 grams