Chemistry Tutorial 6.03a: Determining The Molecular Formula
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Top Comments
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please replace my teacher!
1 year ago 26
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i love you
1 year ago 10
All Comments (36)
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@XpurplepeopleeaterXX I know that your test is already over now, but what you would do is take the percentages of the elements given in the problem and create an empirical formula. Rosengarten has videos on how to do this. Then, find the formula mass of the empirical formula. Take your molecular formula mass that is given in the problem and divide by the empirical formula mass. The number you get here should be whole, which you then multiply with your empirical formula to give you the answer.
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I have a test on this tomorrow >.<
How would you do this: "A compound is 54.5% carbon, 9.1% hydrogen and 36.4% oxygen. Its molecular mass is 88g/mol. What is its molecular formula?"
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looks like one person failed chemistry!!!!!!!!
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why cant teachers be like you?!?!??!! they give hours of lectures and you explained this in a few minutes! thank you so much
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Thank you so much man, I have a final coming up next week and the teacher barely taught us about this this week, but we're so rushed she glossed over it. There are a lot of people out there who really appreciate these vids :)
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Great video! Thank you very much! (:
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you're the best i am spreading your videos around my chemistry class!
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You are amazing! i finally get how to do this! thanks so much!
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You are so awesome!!! Thanks so much!!
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omg thanks to you im passing my exam tomorrow!
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Do they always give the molecular mass to divide by to get the whole #?
z06tiKo 1 year ago
@z06tiKo In New York state, yes.
MarkRosengarten 1 year ago
Gracias por subir este tipo de videos.
corvettezr11995 2 years ago
de nada! :)
MarkRosengarten 2 years ago