Chemistry, 31.07.2019 20:40 iicekingmann
4.2 g of 1,4-di-t-butyl-2,5-dimethoxybenzene (250.37 g/mol) were synthesized by reacting 10.4 ml of t-butyl alcohol (mw 74.12 g/mol, d 0.79 g/ml), 25 ml of concentrated sulfuric acid (mw 98.08 g/mol, d 1.84 g/ml), and 5.6 g of 1,4-dimethoxybenzene (mw 138.17 g/mol) together. calculate the percent yield of this reaction.
Answers: 1
Chemistry, 21.06.2019 20:10
Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.
Answers: 2
Chemistry, 22.06.2019 18:00
Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule
Answers: 2
Chemistry, 22.06.2019 20:40
Select the correct value for the indicated bond angle in each of the compounds. o−o−oo−o−o angle of o3 90° 109.5° < 109.5° 120° < 120° 180° f−b−ff−b−f angle of bf3 180° < 109.5° < 120° 120° 109.5° 90° f−o−ff−o−f angle of of2 < 120° 120° 90° 109.5° 180° < 109.5° cl−be−clcl−be−cl angle of becl2 90° 109.5° 180° 120° < 109.5° < 120° f−p−ff−p−f angle of pf3 90° 109.5° < 109.5° 180° 120° < 120° h−c−hh−c−h angle of ch4 90° < 109.5° 180° 120° < 120° 109.5°
Answers: 1
4.2 g of 1,4-di-t-butyl-2,5-dimethoxybenzene (250.37 g/mol) were synthesized by reacting 10.4 ml of...
Chemistry, 05.10.2019 20:30
Mathematics, 05.10.2019 20:30
Mathematics, 05.10.2019 20:30
English, 05.10.2019 20:30
History, 05.10.2019 20:30
Mathematics, 05.10.2019 20:30
History, 05.10.2019 20:30
Biology, 05.10.2019 20:30
Health, 05.10.2019 20:30
Mathematics, 05.10.2019 20:30
History, 05.10.2019 20:30
Social Studies, 05.10.2019 20:30
Biology, 05.10.2019 20:30