A sample of oxygen gas has a volume of 150.0 mL at a pressure of
0.947 atm. What will the volume of the gas be at a pressure of
1.000 atm if the temperature remains constant?

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.