(Answered) Preparenbspwritten answers to the following exercises1

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Prepare written answers to the following exercises:

1. Write the electronic configurations for the following elements:

2. Write the Lewis structures for the following compounds:

CH₃COOH (carbons are bonded to one another)
Dichloromethane (CH₂Cl₂)
Hydrogen peroxide (H₂O₂)
Hydrogen cyanide (HCN)

3. Methane (CH₄) behaves as an ideal gas under standard temperature and pressure conditions. What volume is occupied by 1 kg of methane at a temperature of 35 °C and a pressure of 0.9 atm?

4. How much energy is released when an ice cube tray containing 250 ml of water freezes? The heat of fusion for water is 6.02 kJ/mol.

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