A solution used as a topical anesthetic contains 50.0 mL of a buffer containing 0.090 M benzoic acid (HC7H5O2) and .180 M sodium benzoate (Na C7H5O2). The Ka of benzoic acid is 6.3 x 10-5.

What would the pH be of this solution at the equivalence point?

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Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³