a fixed mass of a n ideal gas is heated from 50 to 80C at a constant pressure at 1 atm and again at a constant pressure of 3 atm. for which case do u think the energy required will be greater

The energy required is same for both cases since specific heat capacity (Cp) does not vary with pressure.

Explanation:

Given;

initial temperature, t₁ = 50 °C

final temperature, t₂ = 80 °C

Change in temperature, ΔT =80 °C - 50 °C = 30 °C

Pressure for case 1 = 1 atm

Pressure for case 2 = 3 atm

Energy required in both cases is given;

where;

Cp is specific heat capacity, which varies only with temperature and not with pressure.

Therefore, the energy required is same for both cases since specific heat capacity (Cp) does not vary with pressure.

i sometimes feel that way too. i feel that i should hurt someone because they hurt me, but i wouldnt do it. that would make things so much worse i have so much experience with this stuff

explanation:

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27