The reaction of 2-methylpropane with bromine proceeds via a free radical substitution mechanism. The bromine molecule undergoes homolytic cleavage to form bromine radicals. These radicals then abstract a hydrogen atom from the 2-methylpropane molecule, forming a 2-methylpropyl radical. Finally, the 2-methylpropyl radical reacts with a bromine radical to form 2-bromo-2-methylpropane as the final product. **

Methanol should be used for an SN1 reaction with 2-chloro-2-methylpropane. This is because methanol is a polar protic solvent, which is ideal for promoting SN1 reactions. Acetone, on the other hand, is a polar aprotic solvent, which is more suitable for SN2 reactions. In an SN1 reaction, the leaving group (in this case, the chloride ion) dissociates from the substrate before the nucleophile attacks, and a polar protic solvent like methanol helps stabilize the carbocation intermediate formed in this process. **

The complete combustion of 2-methylpropane (C4H10) can be represented by the following balanced chemical equation: C4H10 + 6.5O2 → 4CO2 + 5H2O This equation shows that 2-methylpropane reacts with oxygen to produce carbon dioxide and water as the only products. **

n-Butane has a higher boiling point than 2-methylpropane. This is because n-butane has a straight-chain structure, allowing for stronger intermolecular forces (London dispersion forces) between its molecules compared to the branched structure of 2-methylpropane. The stronger intermolecular forces in n-butane require more energy to overcome, resulting in a higher boiling point. **

When 2-methylpropane is chlorinated in a radical substitution reaction, the primary product formed is 2-chloro-2-methylpropane (tert-butyl chloride). This is the major product as the tertiary carbon is more stable and forms a more stable radical intermediate. Additionally, minor products such as 1-chloro-2-methylpropane (isobutyl chloride) and 1-chloro-1-methylpropane (sec-butyl chloride) can also be formed due to the presence of secondary and primary carbons in the molecule. **

Yes, there are coin-operated vending machines in Flensburg. These machines can be found in various locations such as train stations, shopping centers, and public buildings. They offer a variety of products including snacks, drinks, and even everyday essentials like toiletries and phone chargers. Customers can use coins to make purchases from these vending machines. **

At the first coin-operated vending machine, which was created in the early 1880s by Percival Everett, customers could purchase postcards for their money. The machine was installed in the railway stations and post offices in London, and for a penny, customers could receive a postcard featuring a picture of the surrounding area. This early vending machine was a novelty at the time and provided customers with a convenient way to purchase postcards without the need for human interaction. **

The value of a 2-coin depends on various factors such as its age, rarity, condition, and historical significance. Without more specific information about the coin in question, it is difficult to determine its value. It is recommended to consult with a professional coin appraiser or numismatist to accurately assess the value of the 2-coin. **