Arigid cylinder with a movable piston contains a 2.0-liter sample of neon gas at stp. what is the volume of this sample when it’s temperature is increased to 30 degrees celsius while its pressure is decreased to 90 kilopascal

This problem is being solved using Ideal Gas Equation.
                                                   PV  =  nRT
Data Given:
                  Initial Temperature = T₁ = 0 °C = 273 K
                  Initial Pressure      =  P₁ = 101.325 KPa
                  Initial Volume         = V₁ = 2 L
                   Final Temperature = T₂ = 30 °C = 303 K
                  Final Pressure      =  P₂ = 90 KPa
                  Final Volume         = V₂ = ?
As,
Gas constant R is constant, so, Ideal gas equation can be written as,
                                         P₁ V₁ / T₁  =  P₂ V₂ / T₂
Solving for V₂,
                                           V₂  =  (P₁ × V₁ × T₂) ÷ (T₁ × P₂)
Putting Values,
                              V₂  =  (101.325 KPa × 2 L × 303 K) ÷ (273 K × 90 KPa)

                              V₂  =  61402.95 ÷ 24570

                              V₂  =  2.499 ≈ 2.5 L

1. o2(g)as a product

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .