Question: 1. When a particular substance crystallizes, it forms a simple cubic unit cell. It has a molecular weight of 115.48 g/mole. The unit cell edge

1. When a particular substance crystallizes, it forms a simple cubic unit cell. It has a molecular weight of 115.48 g/mole. The unit cell edge length is 449 pm. Calculate the density of this substance in gg/cm3cm3 .

2. Calculate the molality of a 0.818 M ethanol (C2H5OHC2H5OH) solution whose density is 0.625 g/ml.

3. Calculate the energy (in kJ) required to heat 0.166 grams of water from -22.1 to 24.5 .

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