A 2.8 L sample of carbon dioxide gas is at STP. The gas is transferred to a vessel and the volume is adjusted to 0.45 L and the temperature is brought to 340°C. What is the pressure, in mmHg, of the gas sample under these new conditions

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.