Calculate the Pressure in Atmospheres exerted by 5.6 grams of carbon dioxide in a 1.0 liter container at 25C.?

Calculate the Pressure in Atmospheres exerted by 5.6 grams of carbon dioxide in a 1.0 liter container at 25C. Ideal gas Law problems get on my nerves and i can't seem to do them well so any help would be appreciated.
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