What is the pressure of 0.540 mol of an ideal gas at 35.5 L and 223 K? A 0.715 kPa
B 2.45 kPa
C 28.2 kPa
D 62.7 kPa

The answer is letter c

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

The correct answer is "hydrogen".

B? i feel like this is a trick