The standard enthalpy of formation of h2o

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

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The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed