The black adhesive found inside the Vive box is intended for cable management and securing the base stations in place, enhancing the overall virtual reality (VR) experience. Designed specifically for the HTC Vive VR system, this adhesive is strong yet removable, allowing users to neatly organize the headset's cables or to temporarily mount the base stations without damaging walls. Its inclusion reflects the company's attention to detail, ensuring users can set up their VR environment with ease and minimal mess. By using this adhesive, gamers can create a safer and more immersive VR space.

Unscrewing a PVC union involves careful handling to prevent any damage. Start by ensuring the water supply is turned off to avoid any accidental spillage. PVC unions are designed to connect two pieces of PVC pipe together using threaded ends, allowing for easy disconnection for maintenance or repair. Locate the central nut which connects the two halves of the union. Use a pair of large adjustable pliers or a suitable wrench to grip the nut. Apply steady pressure to turn the nut counterclockwise. If the union is tight or hasn’t been opened in a while, applying a penetrant like WD-40 around the nut can help loosen it. Once the nut is loose, you can unscrew it by hand. Be gentle to avoid cracking the PVC. After unscrewing, inspect both the threads and o-ring for wear or damage, replacing if necessary before reassembly. Remember, PVC fittings should not be overtightened when reassembling to prevent cracking.

The question of how many amino acids are in 1 gram of protein doesn't have a definitive answer due to the variability in amino acid composition among different proteins. Proteins are made up of amino acids linked together in varying sequences and proportions, depending on the protein source (animal, plant, etc.). There are 20 different standard amino acids that can make up proteins, and each has a different molecular weight. However, an average molecular weight for amino acids can be estimated to be about 110 daltons. Given that an average protein might have a molecular weight in the range of thousands to hundreds of thousands of daltons, it's challenging to provide a precise number of amino acids in 1 gram of protein without specific information about the protein's molecular weight and amino acid composition. In general, 1 gram of protein contains hundreds to thousands of amino acids, but the exact number varies significantly based on the specific protein.