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:

he would use the colour black

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72

the answer is true. hope it .