Specific Heat of a Metal Lab

Рет қаралды 325,985

North Carolina School of Science and Mathematics

12 жыл бұрын

Part of NCSSM CORE collection: This video shows the collection of data to determine the specific heat of a metal. www.dlt.ncssm.edu
Please attribute this work as being created by the North Carolina School of Science and Mathematics. This work is licensed under Creative Commons CC-BY creativecommons.org/licenses/b...
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@nightcorenerd19 3 жыл бұрын

Answer Key of the Specific Heat (try to solve it yourself first pls) First find the Joules the water gained Q = 100.0g x 4.18j/g*c x (25-22*C) Q= 1254 J Since it was 1254 J transferred to the water it was removed from the metal - reduction so make it negative -1254 J = 58.953g x C x (25-100*C) -1,254 = 58.953 x C x -75*C -1254 = -4,421.475 x C -1254/-4,421.475 = 0.28361 Specific Heat (C) = 0.284 J/g*C (3 sig figs as there were a low of 3 sig figs in the video) I hope this helps anyone who was stuck (:

@johnroaldcomargo4716 3 жыл бұрын

Question why is the specific heat .284 but when I searched it online its .232 I am stuck on this part please help

@nightcorenerd19 3 жыл бұрын

@@johnroaldcomargo4716 I'm sorry I dont really know why it is showing that, however my teacher did go over these answers so I can confirm that this is a correct answer. I hope this helps!

@johnroaldcomargo4716 3 жыл бұрын

@@nightcorenerd19 Thank you for the reply I asked my teacher and he said that because the given are not exact that's why its showing different results.

@solinapjoshuag.7750 3 жыл бұрын

thanks

@JM-se7rq 3 жыл бұрын

This is late but according to my teacher and also based on the internet, only the water has a constant specific heat which is 4.18J/g.°C. The 0.232 specific heat for Cd on the internet is only a basis (?) or a theoretical answer. Specific heat also depends on the mass(?). Am not sure tho but this is my understanding. Hope this helps!

@nightmarechameleon7502 4 жыл бұрын

Full answer key, for those who want to get it over with and play gmod/minecraft/fortnite: Important timestamps: Formula: 0:42 Filled out table: 4:11(not everything that's graded, though) Mass of the metal: 0:52 Approx starting temp for the metal: 1:02 and 3:05 Weight for water: 1:10 (later on she says that 1 ml converts to 1 gram) Starting temp for the water: 2:00 Procedure: 3:19 Ending temp for the water: 3:46 Temperature change for water: 3:49 Answers to Questions, keep in mind these might not be the ones you have: Water gained energy during the experiment Metal underwent more temperature change Water has a higher heat capacity Ones that have formulas: Heat absorbed by the water: Q = 1255.2J =100 * 4.184*3 Heat the metal released: 1255.2 Joules Specific heat of the metal: C = 7.09 = 1255.2 / (58.953*3) (I looked it up and the specific heat capacity for cadmium is .23 so IDK if I did something wrong or not)

@jeffreynguyen4239 4 жыл бұрын

17 likes but no comment, i want to be the first to tell you you are a king that is loved and appreciated

@peggytaylor5413 4 жыл бұрын

Thank you so much for your help. KUDOS!!!

@zahrazhang9156 4 жыл бұрын

I'm actually going to play roblox but thanks anyway!

@kaianderson1865 4 жыл бұрын

you are a real one

@trevoralexander2589 4 жыл бұрын

This man right here is literally goated

@matthewlamy678 7 жыл бұрын

When ur lab exam is this exact lab

@mohamedelsharkawy5761 5 жыл бұрын

Same

@jamesbernardgtangaran34 4 жыл бұрын

when you are here forced to watch this because your teach told you to do so :< i cant gain learnings here daaamn its better if you experience this experiment :

@justrosy2635 3 жыл бұрын

I hear ya. I'm not in school. Just wanted to learn something new. Am having a hard time prying the lids open, lol! I'd much rather be DOING this than just watching!

@jamesbernardgtangaran34 3 жыл бұрын

JustRosy2 because its an experiment so we should experience not watching it because it sucks :< maybe i will learn it now but later maybe i’ll forget this easily

@anastasialeonard4439 3 жыл бұрын

This is so well explained and helped me understand what i was learning better. Thank you!

@kajal091s 11 жыл бұрын

Here, how to do it for people who need help. specific heat water = 4.18 J/g°C heat gained by water = 100g X 4.18 j/g X 3°C = 1254J heat lost by Cd = 58.953 g x ( 25°C - 100°C)X specific heat = -4421.475 x specific heat heat lost + heat gained =0 1254J -4421.475 x specific heat =0 -4421.475 x specific heat = -1254J specific heat = -1254J/-4421.475 specific heat = 0.28 J/g°C

@nasifrahman1673 7 жыл бұрын

nobody asked

@justinsankar1164 7 жыл бұрын

Nasif Rahman dammmmnnn

@danielwright3394 6 жыл бұрын

Nasif Rahman nobody asked but I needed it so I’m grateful

@millielove13 6 жыл бұрын

i still don't get it :(

@HelenaMai23 6 жыл бұрын

Thank you! very helpful :)

@nilufar3901 2 жыл бұрын

What would happen to the final temperature if you put twice as many (i.e., 200 g) cold steel washers into the water? How does the final temperature depend on the relative mass of the steel and water

@clouzyown3459 4 жыл бұрын

Honestly if I hadn't watch this video soon enough, I would've probably wrote about how I didn't learn anything for my conclusion..

@ArmaanNoorani 3 жыл бұрын

Has anyone come up with a research question for this?

@collegeofthedesertschool4976 2 жыл бұрын

This is a good video to help with the experiments.

@AntoniaWarren 10 жыл бұрын

Life saver for my class today

@mrniceface 3 жыл бұрын

Anyone have the Materials and Procedure written out?

@aminatasouare4363 4 жыл бұрын

What was the temp of the metal before she put it in? Or do we need to use the: Q= mc(Delta)T ?

@extremecontentexplosion9134 4 жыл бұрын

I think we can assume the metal is 100 degrees C when she takes it out of the boiling water

@kurifudoashisu1306 3 жыл бұрын

what was the quantity of heat?

@mohammadkhan6198 3 жыл бұрын

can someone please tell me all apparatus used

@madisons.3078 3 жыл бұрын

this is such a life-saver!! i will be sharing this with classmates!!

@kwakufebri2135 2 жыл бұрын

Thank you very much, I love it.

@jimbynumsierravistahs2319 4 ай бұрын

I teach chemistry and would like to use this video but the value I got was 0.2856 J/gC. The accepted value from the web seems to be between 0.230 to 0.232 on the web. Has anyone else worked this out? If so, what did you get?

@wandafranks2162 11 жыл бұрын

Thank You so much, that was a lot of help and easy to understand. Hope there are more videos like this. I am afraid I will be needing them this semester in Chem.

@nasifrahman1673 7 жыл бұрын

nobody cares

@junheelee786 5 жыл бұрын

anyone knows how to determine the initial temperature of water?? it looks vague when I first see this video.

@mjsteele42 5 жыл бұрын

Stick a thermometer in the water?

@andrewstallard6927 9 жыл бұрын

There is a problem with this experiment. You can't be sure the measured 100 ml of water from the tap is at room temperature. It would be more accurate to put a second thermometer in this water beforehand so you know exactly what its initial temperature is. Otherwise, good demonstration--especially the suggestion of not letting the metal touch the glass on the heating phase. I intend to do this with my own students except with the modification I suggested.

@andrewstallard6927 9 жыл бұрын

Oh never mind! She did that step. The first time I watched I took a bite of my sandwich while she was measuring the temperature and I missed it! Sorry! It's perfect.

@MultiBattleblader 5 жыл бұрын

Andrew Stallard Lol

@ee-kleow7200 5 жыл бұрын

Good job!

@dominioninside2233 5 жыл бұрын

Massive thanks

@andrewfiorilla 4 жыл бұрын

VERY COOL!!!

@lucaber1900 6 жыл бұрын

What are the variables of this experiment???

@memodavid8074 Жыл бұрын

can someone help me? Show the percentage error calculation and result

@earlvincentgraciadas1594 3 жыл бұрын

May I know what materials are being used in this activity?

@ferlieretes2620 3 жыл бұрын

Hahaha laban earl😆

@mae6957 3 жыл бұрын

• Cadmium metal • 1 Scale • 1 Bunsen Burner Set • 1 150 ml beaker • Water • 1 100 ml measuring cylinder • 2 calorimeter • 1 thermometer String • 1 retort stand • 1 ring clamp • 1 stirring rod

@mbalihlatshwayo8763 3 жыл бұрын

The demonstrator mentioned that “at room temperature, 100 ml of water have a mass of 100 g” can anyone please explain using the relevant formulas why this is the case

@leospicegirl 3 жыл бұрын

1 mL = 1 g so 100 mL = 100 g

@sheilapaine7600 5 жыл бұрын

i love u tysm i would've failed my lab exam without this ❤️ haven't done it yet hope i didnt jinx myself lol

@exclusivelythefinest8050 Жыл бұрын

did you fail?

@landonbetker2030 4 жыл бұрын

it is 0.28338871644 so round and if you are using sig fig rules it is 0.3

@joelmunoz3864 3 жыл бұрын

specify what your answer is .... please

@WhatsupbitchWhatsupbitch 5 жыл бұрын

Why the heated metal has to transfer quickly

@malathmohammad4966 5 жыл бұрын

We gotta keep the same temp of the metal if it stayed in the air for a while it's temp will decrease

@kajal091s 10 жыл бұрын

She gave you all the information in the video. I simply applied the formula.

@pastapatrol2926 6 жыл бұрын

no one cares

@lyndseyouimet255 4 жыл бұрын

I need to find the initial mass of the cup and cover (EMPTY) then I need the mass of the cups + cover + 100mL. Can someone please help me?

@justrosy2635 3 жыл бұрын

Wow. Sounds like you've got a real jerk for a Chem teacher, asking you for stuff like that!

@eslammohamed9384 11 жыл бұрын

Thank you very much

@PhilipWithOneL 4 жыл бұрын

Of course, no problem.

@mohammadfaizan1989 6 жыл бұрын

Great video great teacher

@jaidajohn9397 3 жыл бұрын

does anyone know one possible error that couldve occurred during the experiment?

@theforgottenandthelost6748 3 жыл бұрын

One possible error is that the reading is not taken from eye level. This leads to a parallax error where the reading is either higher or lower for the temperature.

@jaidajohn9397 3 жыл бұрын

@@theforgottenandthelost6748 thank you!

@fortunate7583 4 жыл бұрын

What are the apparatus used here

@ayonyescamilla9982 4 жыл бұрын

Cadmium Metal 1 Scale 1 Bunsen Burner Set 1 150 ml beaker Water 1 100 ml measuring cylinder 2 calorimeter 1 thermometer String 1 retort stand 1 ring clamp 1 stirring rod

@reginaretes_721 3 жыл бұрын

@@ayonyescamilla9982 thank you

@justrosy2635 3 жыл бұрын

Why do I suspect that that's how she makes her tea when no one's looking? :)

@Gabriel-xc9uj 8 жыл бұрын

This may sound stupid, but how do you know the initial temperature of the Cd metal? I am doing an experiment with Meat and want to find the specific heat and don't understand how to find the temperature before and after of the meat

@bobolatrick 8 жыл бұрын

it's initial temperature is also room temperature.

@alaanabeel2475 8 жыл бұрын

she put the metal in boiling water to determine the initial temperature of the metal which was 100 C .. the same temperature of the boiling water

@alaanabeel2475 8 жыл бұрын

you should heat your meat in water until the meat and water have the same temperature and thats would be the initial one

@nasifrahman1673 7 жыл бұрын

TOK

@johnandrearuego4321 2 жыл бұрын

Observation pls

@harveysinapsap9526 4 жыл бұрын

sodium hydroxide- 29 °C hydrochloric acid- 29°C calorimeter- 29°C calorimeter with mixed both chemicals- 30°C beaker- 114 grams Calorimeter- 160 grams with water initial temperature of water- 29 °C Calorimiter with copper wire- 30°C initial temperature of metal-85°C copper wire- 4 grams plsss help me to solve this especially about of the specific heat of a metal

@gabrielleabernathy8299 3 жыл бұрын

i hate chemistry with a passion.... That is all.

@rydegatoc7320 3 жыл бұрын

hiii mga klasmeyts!!

@simonkidane4586 4 жыл бұрын

wait, this isn't a rickroll

@joewebster903 7 жыл бұрын

Minus the string !!

@frontmandylan2150 3 жыл бұрын

22.4% error. Way to go, grandma.

@michellesutherland6109 3 жыл бұрын

THANK YOUUU

@liangching3354 3 жыл бұрын

Alguien más por la UTA.

@GMDFeliphess 3 жыл бұрын

asvcdfvasd

@patoyanez9981 3 жыл бұрын

piola xd

@esthellaaa 3 жыл бұрын

COVID19 brought me here✊

@jackgadoury52 3 жыл бұрын

Pretty nifty

@jingya1521 2 жыл бұрын

Do anyone have observation from this lab?

@noahfeatherman7272 12 жыл бұрын

very lost. Did anyone Get this?

@zelsuki 4 жыл бұрын

i know this is 7 years in advance but sorry i can't help you

@mxthhaa 4 жыл бұрын

@@zelsuki LMAOOO

@lucero818 4 жыл бұрын

@@zelsuki BRUHHH, hahahahaahha Noah already graduated and finished his residency lmaoooo

@LilMafiaBoy42 7 жыл бұрын

she seems like a very nice lady 😊

@seankodric9160 6 жыл бұрын

ur rong

@jackkeown6370 3 жыл бұрын

Me just imagining what would happen if that metal was sodium XD

@adelmomorrison3517 3 жыл бұрын

yall don't forget to have the correct sig figs. 12 is not the same as 12.0!

@kentzacharyramos8423 3 жыл бұрын

Hello classmate 😁🙈

@benjaminwalker-cox9181 5 жыл бұрын

What is the answer

@benjaminwalker-cox9181 5 жыл бұрын

I want to know if I'm wright

@yoMAMAs12345 9 жыл бұрын

what is the answer? I need to make sure the answer I got is right

@hellmuth26 5 жыл бұрын

darude-sandstorm

@judelyne08 4 жыл бұрын

My chemistry exam has us watching this video because of the Rona. It's today, wish me luck!

@judelyne08 4 жыл бұрын

I got an A!

@PhilipWithOneL 4 жыл бұрын

@@judelyne08 good for you...?

@user-uw6kw4vv7e 3 жыл бұрын

@@judelyne08 help!!!

@goldegreen 4 жыл бұрын

Anyone here from Klawender?

@eggs4saled275 3 жыл бұрын

Chem lab sent me here, anyone else??

@outasteam 3 жыл бұрын

While all the other kids are doing the lab. I´m at home watching this. Tis a hard life...

@QwertyUiop-wh4pc 3 жыл бұрын

nice

@vinaymishra8600 8 жыл бұрын

0,18925 J/kg °C

@nasifrahman1673 7 жыл бұрын

really

@maxlugo5917 7 жыл бұрын

Using the values she provided, you get a value of 0.28 j/g/°C. The actual specific heat capacity of Cadmium is 0.23 j/g/°C. Perhaps more accurate measurements of the temperature would have yielded better results.

@Technotron705 6 жыл бұрын

WHAT? What is Q? what is the value is Q? please someone tell me ASAP!!

@justinpan1259 6 жыл бұрын

Did you not listen? Q represents the quantity of heat applied or energy of heat!

@freddybishay 5 жыл бұрын

how do you calculate c without having Q that's what i dont understand

@ALLSTARWEEKEND444 5 жыл бұрын

@@freddybishay did you ever figure this out?

@anisahchowdhury3302 5 жыл бұрын

Freddy Bishay that’s what I’m saying

@thomasdanaher8234 4 жыл бұрын

@@anisahchowdhury3302 i wonder if they ever figured it out...

@rohitsingh8281 7 жыл бұрын

she was a nice lady

@akhil.talluri 4 жыл бұрын

my girlfriend made me watch this and ion even know what’s going on😭😭😭

@jasetheace37 Жыл бұрын

right there with ya buddy.

@jasetheace37 Жыл бұрын

still have the girlfriend at least?

@WoodieLarsen 2 жыл бұрын

TO SOLVE THE LAST PROBLEM Specific heat of water is given in JOULES, but the question is asking for CALORIES/(g*T) so instead of calculating 100*4.18*3... its only necessary to calculate 100*1*3.... this is because 1 "gram calorie" = 4.184 Joules. so if we take (100g*1cal*3degree)/(58.953g*75degree)==>(300/4421.475)==> ~.068 given that cadmium's accepted Specific Heat is .055 c/g*T this is a pretty large margin of error, but then again we're using styrofoam cups, so you know it's not like we're sending guys to the moon here.