Question

How many formula units are in 239.2g of Br2 MgCl2 H2O Fe

Answer 1

The formula units in the substances are as follows:

• Br2 = 8.99 × 10^23 formula units
• MgCl2 = 1.51 × 10^24 formula units
• H2O = 2.57 × 10^24 formula units
• Fe = 2.57 × 10^24 formula units

How many moles are in 239.2 g of the given substances?

The moles of the substances are determined from their molar mass.

Molar mass of the substances is given as follows:

• Br2 = 160 g/mol
• MgCl2 = 95 g/mol
• H2O = 18 g/mol
• Fe = 56 g/mol

Formula units = mass/molar mass × 6.02 × 10^23

The formula units in the substances are as follows:

• Br2 = 239.2/160 × 6.02 × 10^23 = 8.99 × 10^23 formula units
• MgCl2 = 239.2/95 × 6.02 × 10^23 = 1.51 × 10^24 formula units
• H2O = 239.2/18 × 6.02 × 10^23 = 2.57 × 10^24 formula units
• Fe = 239.2/56 × 6.02 × 10^23 = 2.57 × 10^24 formula units

In conclusion, the number of formula units is derived from the moles and Avogadro number.

Learn more about formula units at: brainly.com/question/24529075

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