Help me ASAP pls I need a correct answer

Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.

Particles vibrate in a rigid structure and do not move relative to their neighbors.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?