In a container filled with gas at a constant temperature, the volume is 183 ml and the pressure is at 310 mm hg. the desired new volume is 90.0 ml. what is the required new pressure?

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P₁V₁ = P₂V₂ - This is the formula that you ue
Convert  mmHg to atm first.
310 mmHg x 1 atm/760 mmHg = 0.407 atm = P₁
(0.407 atm)(0.183 L) = (x atm)(0.0900 L)
x = 0.826 atm = new pressure.
0.826 atm x 760 atm/1 mmHg = 628 mmHg

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

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