How are speed and pressure of a fluid related?

The velocity and pressure of a fluid is related as follows:

The speed is also called as velocity. Bernoulli’s Principle states that, higher the velocity of a fluid (means liquid or gas), the lower the pressure it exerts. The rapid motion of the fluid molecules causes the Fluid pressure. The Bernoulli equation is given as,

Where,

P – Pressure

ρ –density

v – Velocity

g – Gravitational acceleration

h - Elevation

So, when the fluid moves faster, some energy from the rapid motion of the fluid is used to move faster in the fluid’s direction of motion which results in a low pressure. Thus, the more the speed of a fluid, the lesser is the pressure ().

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

the answer would be a