Which of the following pairs would make a good buffer? a. h2c2o4 and hc2o4- b. hcl and naoh c. ch3cooh and naoh d. hno3 and no3-

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

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.

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?