Question

One mole of an ideal monoatomic gas is heated at a constant pressure

Answer 1

★ Internal energy = f/2 × nR∆T

for mono atomic gas f= 3 

given. 

n =1 

and 

∆T = 100-0 = 100

so 

f = 3/2 ×1× 25/3 × 100

= 1250 J