What are the features of alkali metals?

a. non-metallic, hard, high density, unreactive
c. metallic, hard, high density, medium reactivity
b. metallic, soft, low density, highly reactive
d. non-metallic, medium hardness, high density, inert

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.