You have prepared a buffer by combining 6.00 mL 0.010 M HA (weak acid) and 5.00 mL 0.010 M NaA (provides A -, the conjugate base of HA). pK a for HA is 7.92. How many moles of HA will be present in the mixture after addition of 0.40 mL 0.010 M NaOH? (Suggestion: Start by calculating the moles of everything in the mixture.) Enter the numerical value, without units, to at least 2 significant figures. Use E-format scientific notation, e.g., 1.23x10-4 would be entered as 1.23E-4.