how can you tell from the picture that there is a fixed amount of gas in the cylinder
{"Image DocumentName": "How can you tell from the picture that there is a fixed amount of gas in the cylinder?", "Image ImageDescription": "Describe what is happening in the cylinder as it\u2019s being heated.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}