THANKYOUUUUU SO MUCHHHH!! I've been struggling with this because I need someone to like explain every step by step and guess what?? YOU JUST DID IT. Thankyouuuu
You da man! ------ Struggled for eternity on understanding this from my professors and teachers. Learned it here in a little more than 8 minutes. One like for this vid.
When i enter 1440 divided by 58 i get the answer 24.82758621. When you do it you don't seem to get he decimal point after 24. Also the later calculation you get the correct amount of zeros before the numbers start whilst on my CASIO fx-85GT calculator i get 3.358550105x10-8. I know what 10-8 means i just wondered if you could tell me how i get my calculator to give the answers in the same form as you get?
Hi ChemistNATE and everyone, Could you please help me with this following question Radioactive materials are considered to be relatively safe when their activity has fallen below 0.1% of their initial value. (a) How much half-lives does this take? (Answer = 10 half-lives) (b) Plutonium-239 is a by product of nuclear reactors. Its half-life is 24 000 years. How long does the plutonium-239 have to be stored as nuclear waste before it is considered safe to handle? (Answer - 240 000 years)
Isn't it easier to use the 0.693/k = (half-life), solve for K and then use the first-order rate law ln(At/Ao)= --kt ? Substituting k in Ao = initial amount and At = amount remaining. I used these for each problem and got the same answers. Maybe it's just me, but this way seems much faster and easier to solve. Anyone else prefer this method?
+TheOomen2012 I understand and hope I didn't offend. I was just taught a different way and wanted to offer it up in case anyone else was struggling like me. I find that seeing alternatives sometimes helps me learn better. Thank you
Yeah man, I've heard that here in Canada we use BEDMAS (brackets, exponents, division, multiplication, addition, subtraction) but others use P for parentheses, etc. Thanks for commenting that here, I'm sure it'll help someone else !
I don't even care tht he was a bit cocky anymore I understood here out of all the other 10+ videos I watched thanks nate! *oh and yea exam in an hour!!!
Got a question saying " The activity of a sample falls to 0.60 of its original value after 100s. Find the decay constant." What formula should i use? How would you answer that?
This was very helpful. I am stuck doing a similar problem and was hoping you could help. I am trying to figure out when a live source should be removed. I am given that the source is 4.0mCi and the half life is 2.69 days. In how long should the source be removed if the dose we are prescribing is 2.8x10^13 disintegrations?
As working out the half life is in the syllabus for my gcses, for the second part of the video for working out the time, is this the same principle for figuring out the actual amount of half life's if instead the time is given to you or is there a different solution to it?
I love when i go online and find a tutor thats high as fuck and teachs like a boss.
Lmaoo
Fr
did this man sneeze because bless this man for helping me.
I know your 6 years late but bro its 2020 cant make those jokes nomo
😂😂😂
Bars
that happened ?! 😂
Funny
Your explanations are great because you don't mention what the equations mean, you actually label them. Complete boss.
... and just like that, in 3 minutes, you did better than pages and hours of my chemistry book and lecture. Thank you!!!!
Very enthusiastic.
Enjoyable.
Concise.
I learned.
Nice Madotsuki pfp
man I so wish you were my lecture. you just make things seem so easy and understandable.
Your the man, You explain better than a million teachers with their videos
"Dont be a fool!" lol
Finals tomorrow anyone?
Yup
even 2 years after
@@zayedalkulaib9678 Finals today lol
even 3 years later
yeah
This guy is a legend
I love watching 11 year old tutorials that still work and teach me chem simple
someone still watching in 2024 👀 same
dat intro
Thank you so much. Why can't my teacher just say this?
Because teachers also have nice degrees, and they want to feel good about their fancy degrees.
Because they don't truly understand the concept well enough to simplify it.
***** highly agree!
Been through tons of vids and this one finally helped me without all the other complicated stuff good work lol
I watched several videos on this topic and this is by far the most clear and concise explanation I was given! Thank you so much for making this video!
rise and shine mr freeman
This man just single-handedly saved me for my chemistry test today
So glad I can go online and find a great explanation from 11 years ago
your still saving lives 10 years later
THANKYOUUUUU SO MUCHHHH!! I've been struggling with this because I need someone to like explain every step by step and guess what?? YOU JUST DID IT. Thankyouuuu
I love how you point to the words and numbers. Great video. Very helpful
After watching numerous videos, I was still lost! This is The Best and easiest way to calculate Half life problems!!! I finally got it, thank you!!
Taught me half life calcs before my mid year exam, legend!!
Finished AP chem exam, still goes back to chemistnate for precalc help
This is the best video on the topic. It uses the best formula and shows how to solve for the exponent with logs. Thank you so much.
God bless you Nate, had a test in 4 hours, and didn't know how to solve for exponents.
you are the greatest teacher i have ever seen. Im not even exaggerating.
Maaaannn thank you so much i was finding easy way to teach my students and here i met you. Excited to go to class now. Thanks alot.
This man just saved my semester, I appreciate you
He's so excited its so cute
Even just the formula has saved my life, especially with the teacher never teaching this and proceeding to put it on the quiz :))))))))))))
This guy is really goofy, but I like that, makes things interesting
This video helped me sooo much and I really like the way you teach definitely subscribing!
chemistNATE, thank you so so much! I figured this out now, my teacher doesn't teach properly, but you solved my problem. Thanks again!
Thank you so much for the formula, really appreciate that and I liked and shared it too. Only 8 days left for IGCSE physics exam,soooo.
you're killing me XD "yo just guess..I'm a math wiz fyi"
Please help. For the first problem. How come that
(.5^24.82758621=0.0000336?)
This man just single handedly saved my semester.😭🔥
The real antidote of radioactivity calculation. Thanks alot sir.
this saved my life 🙏🏻 chem test cram
This guy teaches so much better than my actual school teacher
Thank you so much. I just watched this and am amazed about how my physics test is going to be made easier. May God bless you for me.
You da man!
------
Struggled for eternity on understanding this from my professors and teachers.
Learned it here in a little more than 8 minutes.
One like for this vid.
thank you for the video. for these 7 minutes I understood more then from 3 weeks of lectures!!!
it's like the textbooks make it hard on purpose or something
chemistNATE absolute baller
Takes one to know one
damn ! my physics teacher couldnt explain this to his class in two weeks, and u did it in 7 mins ! thanks!
"use bedmas DONT BE A FOOL!!!"
hhaahahah made me laff (im sad)
Cheer Up! It's chemistry!
I love you you may have inspired me to get back into some math after a lot of bad teachers
I love you, thanks for telling us to work it backwards!!! Greetings from Houston, Texas..
as for "don't be a fool.." and "I don't care" :v :v :v I enjoyed this tutorial
Truly a one of a kind wizard, thank you wise stranger...
THANK YOU SO MUCH!!!! My teacher just handed these problems to us when we were leaving class!! Gotta Love Honors Chem.....(Sarcasm)
I love this guys attitude
AWESOME DUDE. I have a prelim exam tomorrow and I had no idea how to do it until now.
yo chemisNate, thanks a lot for the problem 2 you showed. I was looking for it in the internet. gladly found it in your vid. thanks
When i enter 1440 divided by 58 i get the answer 24.82758621. When you do it you don't seem to get he decimal point after 24. Also the later calculation you get the correct amount of zeros before the numbers start whilst on my CASIO fx-85GT calculator i get 3.358550105x10-8. I know what 10-8 means i just wondered if you could tell me how i get my calculator to give the answers in the same form as you get?
Mine is doing that too
your videos are better than any others
Hi ChemistNATE and everyone,
Could you please help me with this following question
Radioactive materials are considered to be relatively safe when their activity has fallen below 0.1% of their initial value.
(a) How much half-lives does this take? (Answer = 10 half-lives)
(b) Plutonium-239 is a by product of nuclear reactors. Its half-life is 24 000 years. How long does the plutonium-239 have to be stored as nuclear waste before it is considered safe to handle? (Answer - 240 000 years)
This is the best teacher ever!!!
Wow, corny and bland jokes. But, literally the best explanation of half-life calculation I have seen... Great job Nate...
0.51...the idrc had me
3.33...use BODMAS, don't be fOOl
5.36...im also a math whiz fyi
It's 2024, best teacher ever 😂
Isn't it easier to use the 0.693/k = (half-life), solve for K and then use the first-order rate law ln(At/Ao)= --kt ? Substituting k in Ao = initial amount and At = amount remaining. I used these for each problem and got the same answers. Maybe it's just me, but this way seems much faster and easier to solve. Anyone else prefer this method?
+Rachel Manno.I wud but i didn't really get what you said, can you do video on that?
+Rachel Manno All roads lead to rome, I prefer using logarithm just because I use it allot but I guess your method also works well.
+TheOomen2012 I understand and hope I didn't offend. I was just taught a different way and wanted to offer it up in case anyone else was struggling like me. I find that seeing alternatives sometimes helps me learn better. Thank you
@@rae7305 Sorry Rae.. His way is soooo much easier especially for those whom are a little weaker in the Math Department
the intro is giving vine energy
Thank you so much. You're a fricking legend.
Without this Math Wizz..
I'm totally insane..xD
Thanks^^
Thank you god! i understood a 2 hr lecture in7.4 minutes!! thanks!
Many many manyyyyyyyyyyyyyyy Thanks Sir... a lesson forgotten for so many years... thanks for making it easy for me...
stg, this dude is gonna be getting me through my bioengineering degree
You the best teacher 👑
I have an exam tomorrow and this video from so long ago helped😍
Wow did not expect the last part.
Your way of explaining is so amazing and simple. Thank you
thank you very much...you have made me a master in solving half life problems.
You said "use bedmis don't be a fool"? Your remark was made at 3:30 in your video. I'm assuming that is an acronymn? Would love to know what it means?
I found it. I know it as Please Excuse My Dear Aunt Sally for the order of operatiions. Thanks, by the way. Great video.
Yeah man, I've heard that here in Canada we use BEDMAS (brackets, exponents, division, multiplication, addition, subtraction) but others use P for parentheses, etc. Thanks for commenting that here, I'm sure it'll help someone else !
Thanks for giving a easy way to check out half life 😊😊
you are so funny and your video is really helpful, your video just helped me with the doubts that i have .
This guys the Goat 🐐
Its been 10 YEARS woh!
I don't even care tht he was a bit cocky anymore
I understood here out of all the other 10+ videos I watched
thanks nate!
*oh and yea exam in an hour!!!
John Malovich is teaching me halflife calculations!
First math Video that made me laugh !! XDDD Thanks for your energy and explanation. That was.... fun ? 0o
Please disregard - I was using the wrong method to enter the exponent! Yay! Thank you, again chemistNATE!
whos ready for finals this week?
Brooooooooo!!!!! All Hail the King.. ChemistNATE!!!
Got a question saying " The activity of a sample falls to 0.60 of its original value after 100s. Find the decay constant." What formula should i use? How would you answer that?
"Use BODMAS. Don't be a fool"
I felt called out lmao
THANKKKK YOU SO MUCH SAVED ME ALOT ! Haha i laughed when you said you're a math Wiz !
Thank you my guy for explaining. It truly helps a lot!
Thank you, thank you, thank you for your clear and straight to the point explanations!
Why did you use log instead of LN? Does it make a difference?
no it does not
The great British baking show
The
only when the problem has e in it but the problem he used didn't so you would use log
QUESTION- does this work for all half life calculations? including second order reaction half-life?
THANK YOU SOOOO MUCH! BEST VIDEO I HAVE Found ONLINE!!!! YOU SAVED MY LIFE❤️❤️
Bruh I have a science exam tomorrow and this is the only thing I don’t know
emergency services because he is on fire with videos
There is also A=Ao x e^( - decay constant x t )
Thank you so much sir, I felt lost earlier but this really helped me
This was very helpful. I am stuck doing a similar problem and was hoping you could help. I am trying to figure out when a live source should be removed. I am given that the source is 4.0mCi and the half life is 2.69 days. In how long should the source be removed if the dose we are prescribing is 2.8x10^13 disintegrations?
As working out the half life is in the syllabus for my gcses, for the second part of the video for working out the time, is this the same principle for figuring out the actual amount of half life's if instead the time is given to you or is there a different solution to it?
Based on my calculations, no you can't use this 1 in 1
Holy shit thank you. I learned this a while ago and completely forgot it the day before a test.
What mode is your calculator set to here? Thanks in advance!