The pressure of a gas is 4.0 atmospheres and it is at 300 degrees Celsius. Given that it is in a 3.0 Liter container, calculate the number of moles? (Hint: R=0.0821)

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.