50.0 grams of KCl is dissolved in water to make a 4.00 L
solution. What is the molarity of the solution? (Molar mass of
KCl = 74.5 g/mol) ___ M ( Round your answer to the
appropriate number of four significant figures)

0.1677M

Explanation:

Molarity=moles/volume

Number of moles =mass/molar mass

Once you get the number of moles, you apply it to the molarity formula.

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