dumb chemestry question

[Anonymous No.12621981]

>asked /wsr/, no replies
Brainlet here.
How would you solve a chemistry problem like this?
I'm a layman trying to learn chemistry.

Is the first answer 5kg?
I don't know how you find the second answer.
Anyone mind explaining?

[Anonymous No.12622006]

>>12621981
Convert grams to moles using molar mass. Then use the ratio then convert moles back to grams using other substances molar mass.

[Anonymous No.12622012]

>>12621981
ever heard of this thing called stoichiometry?

[Anonymous No.12622015]

>>12621981
https://www.sparknotes.com/chemistry/stoichiometry/stoichiometriccalculations/section2/
also ask these questions on /wsr/ lol

[Anonymous No.12622017]

>>12621981
>nothomework2.png
seems legit

[Anonymous No.12622026]

>>12622012
no I havent.
>>12622015
I did. Nobody there can answer a question like this.
>>12622017
It's really not. I don't want to know the answer I want to know how to find it.

[Anonymous No.12622027]

>>12622026
I explained it >>12622006

[Anonymous No.12622031]

>>12622026
then the FBI has been called
2840g?

[Anonymous No.12622042]

>>12622026
Then are you a terrorist

[Anonymous No.12622051]

>>12622031
>>12622042
I'm glad someone figured out the joke.
It's just a workbook problem I found from google images.
Instead of starting from the beginning I like to pick a hard looking problem and try to solve it, even if I can't I find I learn much faster this way.

>>12622006
So looking at the first problem,

4.6292 moles of UO2 = 1.25 kg of UO2?
How do I determine how much HF?
4.6292 * 4?

18.5168 moles = 370.4535 grams
so you would need 0.3704535 kg?

Tell me how wrong I am.

[Anonymous No.12622057]

>>12621981
For an easy overview, go look up "Organic Chemistry Tutor" on yewtu.be (youtube privacy frontend). I'll tldr the steps

1. convert grams into moles (mass given over molar mass)
2. Set up molar ratio
2b. i.e. X.XX mol of UO2 x HF/UO2
3. Get how many mol you need for compound in question
4. convert mole to gram by mole number x 6.022 x10^22
5. click in number
6. stop browsing /sci/, post these questions to /fit/ they have bigger brains.

[Anonymous No.12622061]

>>12622051
You forgot to convert kg to g and back again
Not doing the calculations for you but the structure looks right

[Anonymous No.12622063]

>>12622057
Step 4 is wrong. You use molar mass. Avogadro give you atoms not mass

[Anonymous No.12622073]

>>12622051
>instead of starting from the beginng. You fucking nigger, you're obviously not smart and are a grandiose midwit. Everyone needs to learn from the beginning, you don't innately know theroies or mechanisms in basic STEM shit. This is called Stoichiometry and a kid taking grade 10 chemistry could calculate the limiting reagent here - fucking midwits get off my board REEEEEEE

[Anonymous No.12622074]

>>12622061
>>12622057
>Not doing the calculations for you but the structure looks right
Thanks that's all I was looking for.
I was going to go with this one but I thought the one about U and HF would get a chuckle.

[Anonymous No.12622077]

>>12622063
fuck sorry, I just sat down to the pc from a bong session - tried my best lol

[Anonymous No.12622078]

>>12622077
Yeah it’s np fren

[Anonymous No.12622079]

>>12622073
>This is called Stoichiometry and a kid taking grade 10 chemistry could calculate the limiting reagent here
I only had chemistry for a single year in highschool and we just learned what atoms were and had to memorize the periodic table with no context for what we were memorizing.

It's actually a lot of fun to jump into something you don't know anything about and try to tackle something really difficult.
I'm a big fan of puzzle games and doing stuff like this hit's that same itch.

[Anonymous No.12622201]

>>12622079
so what was the solution for a mid-wit?
>>12622031

[Anonymous No.12622236]

>>12622201
Read the thread I already posted my second attempt at it. >>12622061
said I got it minus the conversion mistakes
Now I'm discovering the Avogadro Constant and reading more about stoichiometry. The solutions not actually important. This is what I wanted from the question.

[Anonymous No.12622254]

>>12622079
>and try to tackle something really difficult
>9th grade chem tasks

[Anonymous No.12622260]

>>12622254
It's difficult for me anon.
We all have to start somewhere.

[Anonymous No.12622334]

>>12622051
>4.6292 moles of UO2 = 1.25 kg of UO2?
the molar mass is based on the unit g/mol. convert the uo2 in kg to g first

[Anonymous No.12622344]

>>12622063
>You use molar mass
this. op can go to pubchem or some other website to find the molecular mass of substances.

[Anonymous No.12622656]

retard here

I'm supposed to write a chemical formula for the reaction of heating Copper chloride hydate until it turns brown (dehydrated)

is it just Cucl*h2o + OH -> Cucl or Cucl*H2O + heat -> Cucl?

[Anonymous No.12622665]

>>12622656
I meant cucl*h2o + O2 in the first reaction I wrote obviously

[Anonymous No.12622673]

>>12621981