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Author Question: Calculate the mass percent composition of sulfur in Al2(SO4)3. (Read 108 times)

lbcchick

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on: Nov 18, 2019

Question 1

A typical cup of coffee has about 100. mg of caffeine. Calculate the number of caffeine molecules in 100. mg C8H10N4O2.
◦ 3.22 × 10-21
◦ 1.17 × 1025
◦ 3.10 × 1025
◦ 3.10 × 1022
◦ 3.10 × 1020

Question 2

Calculate the mass percent composition of sulfur in Al2(SO4)3.
◦ 28.11%
◦ 35.97%
◦ 9.372%
◦ 42.73%
◦ 21.38%
Chemistry: A Molecular Approach (Canadian) ¦ Tro, Fridgen, Shaw ¦ 2nd Edition
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Marked as best answer by lbcchick on Nov 18, 2019

tuate

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Reply #1 on: Nov 18, 2019
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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lbcchick

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Reply 2 on: Nov 18, 2019
YES! Correct, THANKS for helping me on my review

mohan

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Reply 3 on: Yesterday
Wow, this really help

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