An inner tube is a rubber torus. Like a hula hoop but out ot rubber.
One way would be to fill the tube with air, and then hold it under water and look for bubbles. Wherever the bubbles are originating from on the tube is the source of the leak.
The valve is a one-way system. It allows the cyclist to inflate the inner tube with a pump - while preventing air from escaping.
NOSIA: Nonbreakable sodium ignition tube is better way to detection of extra elements.
20 kilometers
Because there is an eardrum in between the outer ear and inner ear, there is no way for it to get right into your brain. There is no tube that goes all the way in.
Same way you'd inflate any inner tube, get hold of a pump with the correct nozzle, if it's a presta - open the valve, attach pump, inflate to correct pressure, remove pump, if it's a presta - close valve, done!
I describe imagination as a way to escape reality or release inner dreams that could never happen to one's self to form some kind of entertainment for others.
You can pick up flexible silicon tubing 5/16" at any hardware store. Get it the same length as the oxygen tubing you want to protect. Ask the store to slit it all the way along its length on one side, so that the O2 tubing can be pushed into the outer tube, which will close up around it. The outer tubing protects the inner tube, and the cat may try to bite it, but will not get through to the inner tube, so the oxygen keeps flowing. The silicon tube is flexible enough to move very much the way the O2 tube would move, and it gives great peace of mind.
20,000 liters or 5,283.4 US gallons.
birds of a feather stay together
Remove tire, remove tube. Buy better rim strip. Install better rim strip. Install tire half way. Repair or buy a new tube. Install tube, Finish installing tire. Inflate tube. Stick wheel back in bike. Check the brakes/chain as needed. Go ride the bike.
Morden, but it's a considerable way away. It's better to take a mainline train into the city.