Which activity will NOT cause an increase in reaction rate?
catalyst
inhibitor
surface area
temperature

Inhibitor

Explanation:

Inhibitors generally slow down a reaction rate and prevent the particles from reacting with each other.

It's not the others because:

Catalysts work by lowering the activation energy, which in turn increases the reaction rate as more particles have enough energy to react.

Surface area allows for particles in the reaction to collide more often with each other, which increases the reaction rate.

Temperature increases the speed of particles in the reaction, causing particles to collide more often with each other and therefore increasing the reaction rate.

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