How many moles of NaCl are there in 5.4 g of NaCl?
To calculate the number of moles of NaCl in 5.4 g of NaCl, we first need to determine the molar mass of NaCl, which is the sum of the atomic masses of sodium (Na) and chlorine (Cl).
Molar mass of Na = 22.99 g/mol
Molar mass of Cl = 35.45 g/mol
Molar mass of NaCl = 22.99 + 35.45 = 58.44 g/mol
Now, we can use the formula to calculate the number of moles:
Number of moles = Mass / Molar mass
Number of moles = 5.4g / 58.44 g/mol
Number of moles ≈ 0.092 moles
Therefore, there are approximately 0.092 moles of NaCl in 5.4 g of NaCl.