Yes, bore guide polymer jags in 6mm are still available from specialty firearm maintenance and cleaning suppliers, as well as from various online retailers. Such jags are essential for shooters who prioritize maintaining their barrel's integrity, as the polymer material is softer than the rifling, reducing the possibility of scratching or damaging the bore during cleaning. Manufacturers like Tipton and Bore Tech offer a variety of polymer jags suitable for 6mm calibers, catering to the demand for gun cleaning tools that minimize wear. When searching for these jags, always check the specifications to ensure compatibility with your cleaning rods and bore guide. Additionally, reviews and forums can be valuable resources for finding recommended brands and suppliers.

Polypropylene, a thermoplastic polymer, is known for its resistance to shrinking and stretching. This feature makes polypropylene garments durable and resistant to wrinkles, but it also means they are challenging to shrink intentionally. If you're looking to resize a polypropylene shirt, direct heating methods like boiling or hot washing, commonly used for shrinking natural fibers, are not recommended as they could damage the fabric or have no effect at all. Instead, consider sewing alterations or the use of hot air from a hair dryer or heat gun for targeted areas, understanding that significant shrinkage might still be unachievable. If you're not experienced with sewing or cautious use of heat tools, consulting a professional tailor for alterations might be the best approach to ensure the desired fit without risking damage to the shirt.

The relative formula mass (RFM) of a compound is calculated by adding together the atomic masses of all atoms present in its formula. Titanium dioxide, chemically represented as TiO₂, consists of one titanium atom and two oxygen atoms. The atomic mass of titanium (Ti) is approximately 47.87, and the atomic mass of oxygen (O) is about 16.00. Therefore, the RFM of titanium dioxide can be calculated as follows: RFM of TiO₂ = (1 x 47.87) + (2 x 16.00) = 47.87 + 32.00 = 79.87. Hence, the relative formula mass of titanium dioxide is 79.87. This calculation is essential in various fields, including chemistry and materials science, for understanding the composition and properties of materials like pigments and photocatalysts.

In order to calculate the relative molecular mass of a substance. you add the relative atomic masses of all its atoms together. The relative molecular mass of titanium dioxide is twice the relative atomic mass of titanium Ti plus the relative atomic mass of oxygen O. Taking titanium at 47.87 g/mol and oxygen at 16.00 g/mol as assumptions. titanium dioxide has a relative molecular mass of 79.87 g/mol.