Answer:
Oxygen is an element.
Explanation:
Out of the choices listed, oxygen is the only element. The other choices are incorrect because air is a mixture of nitrogen, oxygen, carbon dioxide, water vapors, and some other gases; water is a compound of hydrogen and oxygen; and sodium chloride is a compound of sodium and chloride ions; meanwhile, oxygen is a pure element.
-It Can Contaminate drinking water
-It Pollutes the land with Mercury and Cyanide
Because each carbon atom can form for chemical bonds to another’s atoms and because the carbon atom is just the right small size to fit in comfortably as parts of very large molecules
D.) Edmond Locard. He formulated the basic principle that there will be a transfer of material if one object touches another. This material may contaminate a specimen and make it useless as forensic evidence.
“A.) Leone Lattes” is <em>incorrect</em>. He developed a method for <em>blood typing</em> that relied on detection of the specific antibodies.
“B.) Mathieu Orfila” is <em>incorrect</em>. He worked to make <em>chemical analysis</em> a routine part of forensics.
“C.) Hsi Duan Yu” is <em>incorrect</em>. It is a 13th century Chinese <em>book </em>that many people consider to be the first known guide to forensic pathology.
Answer:
2.35 *10^2 g
Explanation:
4.2 mol Fe *55.845 g/1 mol = 234.549 > 2.35 *10^2 g
