To calculate the number of formula units in 292.5 grams of sodium chloride (NaCl), we need to use the formula:
Number of formula units = (mass of substance)/(molar mass) * Avogadro's number
The molar mass of sodium chloride (NaCl) is the sum of the atomic masses of sodium (Na) and chlorine (Cl), which are 22.99 g/mol and 35.45 g/mol respectively.
So, the molar mass of NaCl is 22.99 g/mol + 35.45 g/mol = 58.44 g/mol.
Next, we can use the formula mentioned earlier:
Number of formula units = (292.5 g) / (58.44 g/mol) * (6.022 x 10^23 units/mol)
= 2.00 x 10^24 formula units
Therefore, there are approximately 2.00 x 10^24 formula units in 292.5 grams of sodium chloride.
Calculate the number of formula units in 292,5g sodium chloride
1 answer