Hydrogen gas is very flammable and yields explosive mixtures with air and oxygen. The explosion of the mixture of hydrogen and oxygen is quite loud. Tests should be made prior to the demonstration to adjust the total volume in the balloons so that the sound of the explosion is tolerable in the room.
How long does cooked beef stew last in the freezer? Properly stored, it will maintain best quality for about 4 to 6 months, but will remain safe beyond that time. The freezer time shown is for best quality only - cooked beef stew that has been kept constantly frozen at 0â will keep safe indefinitely.
Frozen pork chops can last in a quality freezer for 6 to 9 months as long as they are in air-tight packaging. After that, they are still safe to eat, but they lose their flavor.f they are 3/4 of inch and you are frying in oil at 350 to 375 degrees, about 15 minutes TOTAL. Six or seven minutes on the first side, eight o â¦ n the second. You'll get much better results if you pan grille, at medium high heat using grapeseed oil and seasoning well.