If the pressure in a gas cylinder is heated to 354.2 K with the pressure of 2.64 atm that was the initial temperature if the initial pressure was 1.25 atm

Initial temperature of the gas cylinder was 167.7K

Explanation:

Based on Gay-Lussac's law, the pressure of a gas under constant volume is directly proportional to its absolute temperature. The equation is:

P1*T2 = P2*T1

Where P is pressure and T absolute temperature of 1, initial state and 2, final state of the gas.

Replacing:

P1 = 1.25atm

T2 = 354.2K

P2 = 2.64atm

T1 = ?

1.25atm*354.2K = 2.64atm*T1

167.7K = T1

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.