Thermo Questions: Final Pressure & Cooling Time

[zack7]

Homework Statement

1.A gas increases in temperature from 40 C to 120 C while increasing in volume from 1 m3 to 1:3 m3. Find the
nal pressure, if the initial pressure is atmospheric pressure.

2.Estimate the length of time it takes for a 0.1 m x 0.1 m x 0.1 m block of steel to cool from 20.0 C to 0 C,
assuming that it loses thermal energy by conduction through all six faces.

Homework Equations

Q1
ΔV = b V₀ Δ T
but this equation does not give me the pressure and I have no idea whether any other equation relates the info I got with pressure
Q2
H =
dQ
dt
= kA(T_H - T_C/L)
Is it I don't have enough info or is the equation I am using wrong?

 

[zack7]

anyone can help me please I just need to know whether I am using the right equations.

Thank you