2. Alex has a big black tattoo of a teddy bear on their back. Iron (II, III) oxide was used as the tattoo ink and has the chemical formula Fe,O. a. What is the molar mass of iron (II, III) oxide? b. Alex's mass before getting the tattoo was 61.5 kg. The tattoo contains 5.20x1023 molecules of iron (II, III) oxide. What is Alex's mass (in kg) after getting the tattoo?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Use the problem-solving format used in Show all calculations. Answer in complete sentences. Use the correct number of significant digits.

 

2. Alex has a big black tattoo of a teddy bear on their back. Iron (II, III) oxide was used as the tattoo ink
and has the chemical formula Fe,O4.
a. What is the molar mass of iron (II, III) oxide?
b. Alex's mass before getting the tattoo was 61.5 kg. The tattoo contains 5.20x10²³ molecules of
iron (II, III) oxide. What is Alex's mass (in kg) after getting the tattoo?
Transcribed Image Text:2. Alex has a big black tattoo of a teddy bear on their back. Iron (II, III) oxide was used as the tattoo ink and has the chemical formula Fe,O4. a. What is the molar mass of iron (II, III) oxide? b. Alex's mass before getting the tattoo was 61.5 kg. The tattoo contains 5.20x10²³ molecules of iron (II, III) oxide. What is Alex's mass (in kg) after getting the tattoo?
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