Answer:
H3PO4
Explanation:
Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak acid with the chemical formula H ₃PO ₄. The pure compound is a colorless solid. All three hydrogens are acidic to varying degrees and can be lost from the molecule as H⁺ ions.
STAINLESS STEEL CHEMICAL COMPOSITION. S.S.. 200. 202. 301. 302. 302B. 303. 303Se. 304. 304L. 305. 308.
You didn't write the choices??
d. sulphur
Because sulphur, once it escapes into the atmosphere can cause acid rain.
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