Phosphoric acid is heated with a sodium halide to make the hydrogen halide and sodium phosphate. It is used to react with rust to make black iron(III) phosphate, which can be scraped off, leaving pure iron.
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Pull out any words that are already there Look for smaller words that are present in the larger word before any rearranging. If the larger word has multiple prefixes or suffixes, remove or cover them so you can see the root word. Write these words as you find them. For example, if you are looking at the word deodorant, start with odor and ant.. Rearrange the letters Scramble or reorganize the letters so you can recognize new patterns. You could take, for example, every third letter to write them in a new order.