0.22 L of HNO3 is titrated to equivalence using 0.18 L of 0.2 MNaOH. What is the concentration of the HNO3?

0.16 M

Explanation:

Data provided as per the question is below:-

Volume of = 0.22 L

The Volume of NaOH = 0.18 L

Morality of NaOH = 0.2

According to the given situation, the calculation of the concentration of the is shown below:-

For equivalence,

Number of the equivalent of = Number of equivalents of NaOH

= 0.16363 M

or

= 0.16 M

b. atoms in metallic solids are not arranged in a regular pattern

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