If you have 25.0 ml of a 6.50m naoh solution and you add 10.0 ml of water to it, what is the new concentration?

Explanation:

The given data is as follows.

        = 25.0 ml,       = (10.0 ml + 25.0 ml) = 35.0 ml

        = 6.50 M,        

Relation between volume and molarity of the two liquids is as follows.

        =

        =    

              = 4.64 M

Thus, we can conclude that new concentration is 4.64 M.

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

hypostyle hall;