Piece of corroded metal rod was found submerged in the ocean. it was estimated that
the original rod had 5 cm diameter, 0.5 m length and approximately 18 kg weight. the
rod was corroded a way due to the submersion. assuming a corrosion penetration rate
of 0.25 cm/yr for this rod in seawater, estimate the time of submersion in years. the
density of alloy is 7850 kg/m3

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.