Q18.5 The molar heat capacity at constant volume of diatomic hydrogen gas (H2) is 5R/2 at 500 K but only 3R/2 at 50 K. Why is this
{"Image DocumentName": "Q18.5The molar heat capacity at constant volume of diatomic hydrogen gas (H2) is 5R/2 at 500 K but only 3R/2 at 50 K. Why is this?", "Image ImageDescription": "1. at 500 K the molecules can vibrate, while at 50 K they cannot. 2. at 500 K the molecules cannot vibrate, while at 50 K they can. 3. at 500 K the molecules can rotate, while at 50 K they cannot. 4. at 500 K the molecules can rotate, while at 50 K they cannot.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}