What kind of liquid should be poured into a glass so that a pressure of 490 Pa is exerted on the bottom

What kind of liquid should be poured into a glass so that a pressure of 490 Pa is exerted on the bottom of the vessel at a height of a liquid column of 5 cm.

Initial data: h (height of the liquid column poured into the glass) = 5 cm; P (pressure that the sought liquid should exert on the bottom of the glass) = 490 Pa.

Reference data: g (acceleration due to gravity) = 10 m / s2.

SI system: h = 5 cm = 0.05 m.

The density of the liquid poured into the glass is determined from the following formula: P = ρ * g * h, whence ρ = P / (g * h).

Let’s calculate: ρ = 490 / (10 * 0.05) = 980 kg / m3.

Answer: The density of 980 kg / m3 has 10% ethyl alcohol (true at 20 ºС).