A plate moving at a rate of 4 cm/year is moving toward a plate that is 10,000 km away. In how many years will the plates collide? 250 million years
2,500 years
25 thousand years
250,000 years

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.