Here you are going to prepare a potassium phosphate buffer of 0.05 M total phosphate concentration, pH of 11.0, and a total, final volume of 1 liter form KH2PO4(s) and K2HPO4(s). Calculate the grams of KH2PO4(s) and K2HPO4(s) to be used:

For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above

In this synthesis reaction what products will form

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.