What is the pH of a solution obtained by dissolving two extra-strength aspirin tablets, containing 590 mg of acetylsalicylic acid each, in 240 mL of water?

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

the maximum mass of nh3 is nh3 in grams