Answer:
option a
Explanation:
because When hydrogen is used to power a fuel cell, the only byproducts are water and heat—no pollutants or greenhouse gases are produced.
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The way that you will easily deduce which one it is is that you'll see the mouth first instead of the anus because of the different ways of development.
The shape of the phosphorus trichloride is a trigonal pyramid.
<span>Phosphorus trichloride consists of phosphorus and chlorine and its chemical formula is PCl3. This molecule is involved in redox reactions and can act both as electrophile and nucleophile. PCl is a precursor to other phosphorus chlorides: PCl5, POCl3 and PSCl3</span>
