You're methods are saving me so much stress before my chemistry final!! Thank you ❤

SO SO SO HAPPY I found your channel, Chemistry has been kicking my butt! Since I've found your channel, everything seems to make sense now! PLEASE NEVER stop making youtube videos!!!

Chemsitry teachers really be like "You have 12 of these questioons and 15 minutes to complete the quiz"

@drewwhite9280

3 жыл бұрын

Literally my chem exam tomorrow

@vesper-lu5wm

3 жыл бұрын

the collegeboard rlly be like: you have 21 parts to this question and 2 minutes to complete it have a nice day

@drewg4323

2 жыл бұрын

@Drew White Literally my chem exam tomorrow too xD

@pat917

2 жыл бұрын

@@drewg4323 We're all here for the same reason lmao

@cricup3835

Жыл бұрын

Will I get full marks if I apply this way in the exam?

That was so easy! Ive been struggling for 2 weeks on this unit but 15 minutes of your videos and i feel like ive mastered it!

I keep getting 53.5 on the final answer and i don’t understand why

You made it like piece of cake for me . Thank you so much!❣

omg girl. you're such a blessing. much love.

very neat video, currently going through many different videos of this specfic topic so i can understand it no problem, and this video was super easy to understand, much appreciated

I'm so glad I found your channel! It has helped me so much!!!!

Am I the only one that got 53.9 g Ca(OH)2? I kept double checking your math and mine and I got that answer.

@Pranjal04

3 жыл бұрын

i did too but she mentioned in a another comment how she got the answer. it’s probably because we multipled 47.2g but it’s supposed to be 41.2g her 7 looks like a 1

Thank you so much! Finals are coming up, and your videos are an awesome review!

love your videos , I feel much better now about stoichiometry .

this actually helped a lot thank you 🙏🏼💓

Isn't it the answer 53.97 g ca(oh)2 And not 46.7g ca(oh)2 If am wrong can u explain how u got 46.7

@Seeynthia

2 жыл бұрын

I thought I needed a new calculator

You’re an absolute life saver

Hi Melissa, your videos do help and I bought your notes! I am an older student (53) and I am struggling! I can't fail this class , but my professor is not getting through to me! :(

this is a great video and i guarantee that you will understand step by step

You're literally amazing omg

So in the last example our answer is 46.7 not 47 because we do not consider the sig figs coming from 98 because it is a counting number ?

Till this day it’s still helping me ❤️

much love🤙but how do you know what to look at to find the right number of sig figs?

Thank you for your videos. Sincerely, thank you!

Helped me so much thank you

For grams to grams, could you just do grams to moles and then moles to grams again or would that not work? Thank you for your videos the step by step directions help me tremendously. You are a major help in my chemistry class and I wish I had learned about your channel sooner! 💕🙌🏼

@steph7115

9 ай бұрын

Did you figure it out? I'm wondering the same thing

Thank you for the help!

You’re awesome thank you! 💕

Hi Miss How are you i would like to buy your note book from amazon but it was expansive to me and why you don’t but all of them together with low price?

thank u so much it helped me a lot

Thankyou so much for saving us mwahh❣️

this helped !! thank you

what do u mean multiply straight across? which numbers do u multiply exactly to get the answer 46.7?

Thank you so much!

What happens if there are two givens in the stoichiometry problem??

what is the app you are using?

Thank you so much ❤❤❤❤

thank you, however I got 53.53g Ca(OH)2 using my casio calculator. also had to divide 2 not multiply 2 when I multiplied 2 like she says I got a way bigger number. Either way still very helpful with setting it up.

Thank you angel

Thanks a lot!

I love you 😭

thx for the help, Im majoring the bioscience and have to take chemistry for the major for every semester I think. I'm decent at the bio part but I really suck with chem I planning on just changing my majoring to business management next semester because of how bad I am at chem.

You're an angel. Thank you!!

@melissamaribel

5 жыл бұрын

You're very welcome 😊

Wait why is it a 1 on the first conversion table?

Would like clarification on this problem please. When copper (III) hydroxide is heated it decomposes to form black copper (II) oxide and water. How many grams of copper (II) oxide will be formed from the decomposition of 1.4 g of copper (II) hydroxide. Please help Here's the balanced equation I got, Cu(NO3)2 + 2NaOH=Cu(OH)2 + 2NaNO3?

@melissamaribel

5 жыл бұрын

Hey Ariel, double check your chemical equation for this question because the first sentence translates to something different. copper (III) hydroxide is heated it decomposes to form black copper (II) oxide and water means Cu(OH)3 = CuO2 + H2O ( Note this is unbalanced)

binge watching your vids an hour before my exam. hope i pass!

@ashleyweathers6636

4 жыл бұрын

Glooper me 😂😭

@greenclock7423

3 жыл бұрын

Did you pass?

@glonkwfuggler6790

3 жыл бұрын

Green Clock yep! this was a while ago but I’m about to start engineering courses this semester

@steph7115

9 ай бұрын

​@@glonkwfuggler6790any updates

Thanks you saved me

1.molar mass 2.ratio 3.molar mass

thank youuuuu

Im lost what did she do at 4:33

@ramoncamarena7290

2 жыл бұрын

yo do you know what she did because that's what I'm trying to figure out right now and I'm completely lost

Very clear explanation, helped me a ton. Thank you!

I want you to tutor me plz. How do we go about it ?

You’re amazing! I always watch your videos the day before the test!

you’re the best

How aren't you at a billion subscribers!!! Lol, I'm exaggerating but honestly you are helping so many people

I don't understand how you got the answer when you mention multiple across 98 divide by 2 and etc... can you explain it

@rockyrocky9189

6 жыл бұрын

+Melissa Maribel THANK U SO MUCH OMG.I WISH MY WIFE (Future i guess)WOULD BE LIKE U

@paulmyers9599

2 жыл бұрын

I don’t understand it either. I keep getting 53.5

Do you also do videos on AP Chem?

hello Melissa, Good evening and sorry to disturb you. pls do you make any video on molarity and normality

My professor has done 100 of these, but you simply saying "go from grams to moles, moles to moles, then moles to grams" made things click more than watching her do 100 of them. Props

Why is H3PO4 sometimes substituted by H3O+ or H+ in such an equation?

@melissamaribel

4 жыл бұрын

These are all acids, H3PO4 is a type of acid and H3O+ and H+ refers to an acid.

@matinannaji602

4 жыл бұрын

Melissa Maribel oh, that makes sense! However, when giving an acid-base chemical equation, does it matter if I use H3PO4, H3O+ or H+ (because my book uses H3O+ but I find it confusing).

Can you show me how to convert this type of question. If 400ml of 3M acid react with 75.0g of Zinc,how many grams of hydrogen gas will be produced?

@melissamaribel

6 жыл бұрын

Did the question give you a balanced equation? Because you are going to need that. The overall plan is: grams of Zinc to mol Zinc (using the molar mass of Zn) then go from mol of Zn to mol of H2 gas (using the mole to mole ratio) then go to grams of H2 (using the molar mass of H2)

@paulvanlieshout369

6 жыл бұрын

no there is no balanced equations. The question just reads like that on the paper

@melissamaribel

6 жыл бұрын

I see ok no problem, The potential equation would be something like this Zn + 2HCl = ZnCl2 + H2 This is actually a limiting reactant type of question so we will find how many grams each initial reactant will produce and the one that produces the least is the limiting reactant. 3 Steps: Step 1: Convert grams Zn to mol Zn to mol H2 to grams H2 This gives you some value of grams H2 Step 2: Convert mL of HCl to L HCl to mol HCl ( using 3M as 3 mol/ 1 L) to mol H2 to grams H2 This gives another value of grams H2 Step 3: Looking at steps 1 and 2 which ever value is the smallest grams of H2 is the answer for how many grams of H2 are produced.

Please help I don’t understand this at all my question isn’t worded like this I don’t know what to do

Thank you for these videos. I am able to use them to help my chemistry students while we are attempting to do E-Learning.

re-check the finial calculation for the first problem should it not be 53.53g

@cricup3835

Жыл бұрын

Will I get full marks if I apply this way in the exam?

thanks

@melissamaribel

6 жыл бұрын

You're welcome 😊

I love uuuu omg

@melissamaribel

5 жыл бұрын

💕

Thanks a bunch!!! I wish you could be also a physics teacher!;)

I got a different answer 53.5 g ca(oh)2

@halwaneellis2405

5 жыл бұрын

mee too

@knatmanison8835

5 жыл бұрын

Yeah same as @melissa Gonzalez . Thanks for nothin

@Moxieinmotion

5 жыл бұрын

Yes me to. I realize when I use the calculator on my iPhone it repeatedly came up 53.5. When I used the calculator on my lap top it was the correct answer. I frequently get wrong answers when I use my I phone calculator. I don't know why this happens, but I don't trust its accuracy anymore.

@blakerobinson1960

5 жыл бұрын

@@debramansperger1319 yes this is the same problem I had. I started with 47.2g which gives the answer 53.5 g ca(oh)2

@karinshaked

5 жыл бұрын

She did a very good job explaning it and all the equation was right but maybe there was an error in last calculations becuase i got that too

I don’t know if you have an email where u can be reached at or if u give tutoring but I really could use the help it’s very urgent

thank you!

😍😍❤❤

😍🥺🙏🏻

lost. i though the final answer was 53.9 .... 54

I hate how long it takes doing homework with problems like these take hours especially if you have 20+ questions and a double quiz on moles and mass and stoichiometry on the same day. I hate mini-term chemistry classes

@rosafajardo7071

4 жыл бұрын

at least you don't have to do a 198-stoichiometry worksheet problems in 4 days

@persephone9307

2 жыл бұрын

Same. I cant count how many times I've practically given up. I'm so done with this class.

Have a test in 15 minutes 😩

@melissamaribel

4 жыл бұрын

Hopefully this video helped a little before your test

When I heard Melissa's voice for the first time. I thought she was a black girl. Because her strong sound...

I think I need to send you a fruit basket after this quarter is over.

The writing is very distracting and hard to read, also the 7's and 1's look similar and it's confusing :(

@melissamaribel

4 жыл бұрын

Sorry about that, I have another video on stoichiometry with different font here: kzread.info/dash/bejne/mYmGpJODp7PMeto.html

this is too hard