Chemistry, 18.11.2019 05:31 wrestling2
The molar mass of the common antibiotic oxytetracycline is found to be 460 g mol^-1 and a 2.000 g sample contains 1.1478 g of carbon, 0.10435 g of hydrogen, 0.62609 g of oxygen, and the remainder being nitrogen. what is the molecular formula of the oxytetracycline ?
Answers: 3
Chemistry, 22.06.2019 10:10
Stage in which a star’s outer layers have started to cool and grow outward?
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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
Chemistry, 22.06.2019 22:30
Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.
Answers: 1
The molar mass of the common antibiotic oxytetracycline is found to be 460 g mol^-1 and a 2.000 g sa...
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