Molarity Molality and Molar Mass for MCAT General Chemistry

[@devashishpatil6099]

your way of explanation is off the hook

[@Leah4sciMCAT]

Glad you like it

[@justarandompieceofshit4982]

this person is truly a hero thank you!

[@Leah4sciMCAT]

awww! Thank you! And you're welcome :)

[@vimch7264]

Thank you so much Leah! Your videos are always a life saver!

[@Leah4sciMCAT]

You are so welcome, happy to help!

[@laciephibbs9931]

I love your videos! They are SO helpful! Thank you!!!!

[@Leah4sciMCAT]

Thanks so much Lacie!

[@saraisosa0321]

You make life easier! Thank you

[@Leah4sciMCAT]

You are so welcome!

[@arianaramos4949]

Thank you! This was SO helpful!! You are really great at explaining!

[@Leah4sciMCAT]

You are so welcome! Happy to help!

[@doctorphoton1]

Please take all my money. You're incredible.

[@Leah4sciMCAT]

Awww, thanks :)

[@itzkhan7267]

Ur lectures are very interesting and informative ....plz make sch vedios lectures continue. ...they r really vry hlpfull

[@Leah4sciMCAT]

Thank you

[@iambjanae]

Sooooo helpful!!! Thank you

[@Leah4sciMCAT]

You're welcome! Glad it was helpful!

[@ic718708]

You say to try the quizzes on your website, but there are no quizzes listen on this.

[@Leah4sciMCAT]

The free quizzes are what I do as I have time. This quiz is still on my to-do list. Be sure to check back often as I am always adding new stuff: leah4sci.com/mcat

[@yedellikrishnamohan9743]

Good explanation

[@Leah4sciMCAT]

Thanks!

[@FireStar842]

you're the goat

[@Leah4sciMCAT]

Thank you! Glad you found this helpful!

[@RenataBP]

Where is the 0.01 L of NaCl coming from. I thought it was 0.5

[@Leah4sciMCAT]

If you're speaking of the example towards the end of the video, we were creating a 0.5 Molar solution, which means 0.5 moles of NaCl in 1 Liter of total solution. That solution's volume comes from both the volume of the water and the volume of the solute NaCl itself. If you listen carefully, I was creating a hypothetical situation for the 0.01 L of NaCl. I said, "This is not coming off of a table. I want you to pretend that these numbers are correct. Let's say that the volume of the NaCl is equal to 0.01 Liters." Think of this problem as more of an introduction to molality. No exact numbers were used to get that volume of NaCl.