Provide explanations for why it is or isn't true. If it's not true, provide the correct formula and describe why that's the correct formula (and/or show derivations).

we found that ideal air can be described by U=5nRT/2 and PV=nRT. Also, for air that undergoes an adiabatic change, PV7/5= const. Note that we have treated air as 100% diatomic. In reality, 1% of the molecules in air are argon, a monatomic gas. Using this more accurate composition for air, which of the following is/are still true: A) U=5nRT/2 B) PV=nRT C) PV7/5= const. for an adiabatic process If an equation is no longer true, then provide the correct formula