Which unit is commonly used for measuring pressure?
a. m3
b. bar
c. n/m3
d. celsius

B. bar

Explanation: Pressure is defined as the force exerted per unit area.

S.I. unit of force is Newton(N)  

S.I. unit of length= meter(m)

Thus units of pressure can be or atmosphere or bar or Pascal.

A. : This is the unit of Volume. Volume=

C. : This is the units for=

D. Celsius: This is the unit of temperature.

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