Skydiver leaps from an airplane. After 4 seconds, the skydiver has a velocity of 36 m/s. Which of the following is the average acceleration of the sky diver?
A 9 m/sec2
B 9.8 m/sec2
C 32 m/sec2
D 144 m/sec2

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.