Calculate the pH of a buffer containing 0.155 M HNO2 and 0.170 M NaNO2 at 25°C. The pKa value for HNO2 is 3.40. Calculate the pH of the buffer after the addition of 1.083 mL of 11.806 M HCl to 1.00 L of the buffer.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

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explanation:

answersilicon (si); oxygen (o);