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Author Question: The molecular formula for caffeine is C8H10O2N4. How many moles of C atoms are present in a 2.0 g ... (Read 35 times)

JMatthes

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on: Jul 8, 2021

Question 1

The molecular formula for a sugar molecule is C12H22O11. What is the percent of carbon in the molecule?
◦ 2.37%
◦ 67.88%
◦ 42.12%
◦ 8.34%
◦ 26.67%

Question 2

The molecular formula for caffeine is C8H10O2N4. How many moles of C atoms are present in a 2.0 g sample of caffeine?
◦ 0.32 mole
◦ 0.27 mole
◦ 0.041 mole
◦ 0.082 mole
◦ 0.010 mole
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by JMatthes on Jul 8, 2021

ktidd

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Reply #1 on: Jul 8, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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JMatthes

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Reply 2 on: Jul 8, 2021
:D TYSM

nguyenhoanhat

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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