niversity L to wwN11559 Hwk 7 x PDF error Ed Math 1113 Assessme ymod/smartwork/v

Question

niversity L to wwN11559 Hwk 7 x PDF error Ed Math 1113 Assessme ymod/smartwork/view.php?id 664s77&isstudentei; stion 1 of 11 (1 point) Titanium dioxide and zinc oxide are two of the 16 active ingredients approved by the FDA for use in sunscreens. (a) What are the chemical formulas of these compounds? Titanium dioxide Zinc oxide (b) What are the correct chemical names for the compounds? Titanium dioxide Zinc oxide (c) Which compound contains a higher percentage of oxygen by mass O Titanium dioxide O Zinc oxide Check Answer press 2 -D Exil Active Activity Grade: 11 points po stole

Explanation / Answer

Question 1.

a)

Titanium dioxide --> Titanium --> +4 and Oxygen -2

so

TiO2

for

Zinc Oxide --> Zn= +2 and O = -2

ZnO

b)

correct chemical names of the compouds

Titanium (IV) Oxide

and

Zinc Oxide; no need to stte (II) sine zinc has only 1 ox number

)

higher % of Oxygen:

TiO2 vs ZnO

Clearly, TiO2, has more O per unit

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