Confused by Chemistry? Get Answers Here!

AI Thread Summary
The discussion centers on the distinction between molecular mass and molar mass in chemistry. Molecular mass refers to the average quantity of nucleons in a molecule, measured in grams per mole (g/mol), with water (H2O) having a molecular mass of 18 g/mol. This means that 18 grams of water equals one mole. The conversation highlights the importance of understanding these concepts to avoid confusion in chemistry. It also touches on the challenges faced by students due to language barriers with teachers and the lack of peer support, emphasizing the need for clear explanations and assistance in grasping these fundamental ideas.
FLgirl
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Is it just so chemistry is extra confusing to students? I don't understand...
 
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Ugh...no...it is not the same.
Molecular mass is the average quantity of nucleons (protons + neutrons) in a single molecule of the compound. It is NOT measured in grams, but in gram/mole. This means, for example, water, H2O, has a molecular mass of 18g/mol, because the average hydrogen has 1 proton and the average oxygen has 16 nucleons (1*2+16=18).
Thus, 18 grams of water are 1 mole.
Any pair of scales measures weight, not molecular mass, so you forcefully need to know the molecular mass and the required weight to get the quantity of moles you need.

And chemistry is not confusing if you get into it. Try to have a friend explain you, I am aware some teachers are terrible.
 


Ugh omg you didn't explain what molar mass was? *eyeroll*

And yes my teacher doesn't speak good english so its hard to understand, and I don't have friends so my bad if this question is SOOOO beneath your intelligence level.
 

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