Calculate formula units in 29.5 g sodium chloride
The molar mass of sodium chloride (NaCl) is 58.44 g/mol.
To calculate the number of formula units in 29.5 g of sodium chloride, you need to convert grams to moles using the molar mass.
moles = mass / molar mass
moles = 29.5 g / 58.44 g/mol
moles ≈ 0.5051 mol
Since one mole of NaCl contains 6.022 x 10^23 formula units (Avogadro's number), you can calculate the number of formula units in 0.5051 mol:
formula units = moles x Avogadro's number
formula units = 0.5051 mol x 6.022 x 10^23
formula units ≈ 3.041 x 10^23
Therefore, there are approximately 3.041 x 10^23 formula units in 29.5 g of sodium chloride.
To calculate the number of formula units in 29.5 g of sodium chloride, we will need to use the molar mass and Avogadro's number.
1. Find the molar mass of sodium chloride (NaCl).
- The molar mass of sodium (Na) is approximately 22.99 g/mol.
- The molar mass of chlorine (Cl) is approximately 35.45 g/mol.
- Adding these together, we get the molar mass of NaCl = 22.99 + 35.45 = 58.44 g/mol.
2. Calculate the number of moles of sodium chloride.
- Use the formula: moles = mass / molar mass.
- In this case, moles = 29.5 g / 58.44 g/mol.
- Calculating this gives moles = 0.505 mol.
3. Determine the number of formula units.
- One mole of any substance contains 6.022 x 10^23 particles, which is also known as Avogadro's number.
- Multiplying the number of moles by Avogadro's number gives the number of formula units.
- Number of formula units = 0.505 mol x 6.022 x 10^23 formula units/mol.
Now, let's perform the calculation:
Number of formula units = 0.505 mol x 6.022 x 10^23 formula units/mol.
Number of formula units ≈ 3.04 x 10^23 formula units.
Therefore, there are approximately 3.04 x 10^23 formula units in 29.5 g of sodium chloride.