At the equivalence point in an acid - base titration, the:
a. [h+] = [oh¯]
b. [h+] > [oh¯]
c. [h+] < [oh¯]
d. [oh-] is zero

At the equivalence point in an acid-base titration, the

Explanation:

An acid is defined as the substance which released hydrogen ions when dissolved in water.

A base is defined as the substance which released hydroxide ions when dissolved in water.

At equivalence point, then number of moles of hydrogen ions is equal to the number of moles of hydroxide ions.

There are 3 types of solution:

Hence, at the equivalence point in an acid-base titration, the

3 1/4 %

explanation:

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3