Answer both or even one question its science

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

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol