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Replacing the digitizer adhesive on a Samsung Galaxy Tab E requires precision and the right tools. Start by turning off the tablet and removing any SIM or microSD cards. Gently heat the edges of the device with a heat gun or hairdryer to soften the old adhesive. Use a plastic opening tool to carefully pry the device apart, taking care not to damage the internal components or the LCD beneath the digitizer. Once the tablet is open and the old digitizer is removed, clear any remaining adhesive with isopropyl alcohol. Apply the new adhesive strips to the digitizer, aligning them precisely. After placing the digitizer back, apply gentle pressure around the edges to secure the adhesive, then reassemble your device. It's vital to work in a clean, dust-free environment and handle components with care to avoid additional damage.
Amino acids can be halal, but their halal status largely depends on their source and method of production. Amino acids derived from plant sources or synthesized in a lab without using any animal substances are generally considered halal. However, if they are derived from non-halal animal sources or involve alcohol in their processing, they would not be permissible for consumption according to Islamic law. Some common amino acids used in food and supplements include leucine, valine, and glutamine. For a product containing amino acids to be certified halal, it must undergo evaluation by a credible Islamic certification body to ensure it meets all halal dietary guidelines.
The oxidation number of iron in Fe2S3 can be calculated by knowing that the oxidation number of sulfur in this compound is -2. Given that there are three sulfur atoms contributing a total charge of -6 (3* -2 = -6), and the compound must be neutral overall, the total positive charge contributed by the two iron atoms must balance this out to 0. Thus, the two iron atoms together must contribute a positive charge of +6 to counterbalance the -6 from sulfur. Dividing that +6 charge evenly among the two iron atoms gives each iron an oxidation number of +3. Therefore, in Fe2S3, iron has an oxidation number of +3. This is an essential concept in understanding redox chemistry, where the transfer of electrons and changes in oxidation state play a critical role in chemical reactions.
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