How is beryllium (be) similar to calcium (ca)?
a. both are rare metals.
b. both react readily with elements in group 1.
c. both are very reactive.
d. both rarely combine with other elements.

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.