You need to prepare a stock solution at ph 7.00 with kh2po4 and na2hpo4 (pka =7.21). what would be the respective concentration of these substances if you wish to obtain the final phosphate concentration [hpo4 −2 ] + [h2po4 − ] = 0.3 m? b. what will be the ph of the solution after adding 0.18 l of 0.2 m naoh?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c