The 2nd one I think but I need some points
I hope you are able to find your answer through the guidance of this site as I have yet to cover this topic in chemistry: http://scientifictutor.org/1021/chem-how-to-convert-between-grams-and-molecules/
<span>the Brazil Current has the warmest water</span>
I don't recognize this problem, please make sure the input is complete.