9A. A sample of hydrogen at 1.56 atm had it's pressure decreased to 0.73 atm producing a new volume of 751 mL. What was its original volume? *
7 points
351 mL
1,600 mL
273 mL
0.0015 ml

Explanation:

The original volume can be found by using the formula for Boyle's law which is

Since we are finding the original volume

From the question we have

We have the final answer as

Hope this helps you

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.