Calculate the number of formula units in 292,5g sodium chloride
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.
To calculate the number of formula units in 292.5g of sodium chloride, we need to use the concept of Avogadro's number and the molar mass of sodium chloride.
Step 1: Find the molar mass of sodium chloride.
The molar mass of sodium chloride (NaCl) is calculated by adding the atomic masses of sodium (Na) and chlorine (Cl). The atomic mass of sodium is 22.99 g/mol, and the atomic mass of chlorine is 35.45 g/mol.
Molar mass of NaCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol
Step 2: Determine the number of moles in 292.5g of sodium chloride.
To find the number of moles, divide the given mass by the molar mass.
Number of moles = Mass / Molar mass = 292.5g / 58.44 g/mol ≈ 5 moles
Step 3: Calculate the number of formula units.
Since 1 mole of any substance contains Avogadro's number of particles, we can use this information to calculate the number of formula units.
Avogadro's number (NA) = 6.022 × 10^23 formula units/mol
Number of formula units = Number of moles × Avogadro's number
= 5 moles × 6.022 × 10^23 formula units/mol
≈ 3.011 × 10^24 formula units
Therefore, there are approximately 3.011 × 10^24 formula units in 292.5g of sodium chloride.