Everyone keeps telling me I am writing this formula down wrong but it is one my teacher gave to figure out....am I wrong and what formula name is it???(adsbygoogle = window.adsbygoogle || []).push({});

Mg3(PO5)2

Also not sure what chemical formula for these two are any help would be great

1. Chlorhydric acid

2. Iodhydric acid

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# Is there such a formula

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