Chemistry Tutorial 10.2a: Concentration - Molarity

This video explains what molarity is, how to calculate it, and how to calculate the grams needed to make a solution of desired molarity and volume.

Category:

Education

Tags:

• chemistry
• rosengarten
• molarity
• concentration
• solutions
• solution

[yashoesandsox1]

I always thought we could abbreviate moles with a lower case n?

[MarkRosengarten]

@yashoesandsox1 That's the algebraic symbol for moles as a variable in an equation. It's also used to denote principal energy levels in quantum mechanics. The actual unit abbreviation is mol.

[ssj7warrior]

You could make 180mL of what molar with 30mL of 4M?

[MarkRosengarten]

@ssj7warrior Please give me the formulas of the acid and base in question. This isn't enough information to go on.

[ssj7warrior]

@MarkRosengarten That is all my book gave me, no lie. But I did figure it out. I got 4M*30mL/180mL=.067M. My book just gives the uestion and answer, I have to show how to solve the problem.

[MarkRosengarten]

@ssj7warrior They didn't give the formulas of the acid (like HCl) or the formula of the base (like NaOH)? Or even identify which was the acid or base? Not a textbook I'd ever use. :) Good answer, though!

[ohhyesbabyohhyes]

I just realized you have your watch on the right hand... maybe it's because i was CONCENTRATING so much on the video.

P.S very helpful video.

[SamxoxoGleek]

THANK YOU!!!

[WFLone]

great video it help me tons thanks.

[Legendaryjujitsumast]

I signed in to my youtube account, just to say thanks.. so thanks, if I would've been shown this visually in the first place.. it would've saved about 4 hours of frustration and confusion

[SUGGAMAMI9]

What is the molarity of H+ in an aqueous solution that is 0.31M HClO4?

[hot49gal]

Thank you for the help on molarity. It really helps my problem.

[cthougthz]

It's not fair, I wish you could replace my professor.

[gilangandikac]

I wish you were my teacher, you're amazing!