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818jasmine
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when a 140g piece of metal at 70 degree Celsius is placed in 220g of water at 0 degree Celsius, the metal is cooled, and the water is warmed and both come to a final temperature of 10 degree Celsius. What is the specific heat of the metal?
 3 years ago
 3 years ago
818jasmine Group Title
when a 140g piece of metal at 70 degree Celsius is placed in 220g of water at 0 degree Celsius, the metal is cooled, and the water is warmed and both come to a final temperature of 10 degree Celsius. What is the specific heat of the metal?
 3 years ago
 3 years ago

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Owlfred Group TitleBest ResponseYou've already chosen the best response.0
Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!
 3 years ago

Ms.bio Group TitleBest ResponseYou've already chosen the best response.0
wow, this one is thermodynamics right?
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
its actually physics but it's considered to be in the math category so i need a lot of help with this.
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
The heat associated with a certain mass changing temperature is
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
the energy change in the water has to equal the energy change in the metal
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
Qm=140*c*(7010) Qw=220*4.186*(100)
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
you set the two equal to each other and solve for c. That equation will give units of Joule/(gram Celsius)
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
so would i be solving the equation that you suggested i'm confused
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
Have you learned the heat/energy required to change the temperature of a substance?
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
no i don't quite understand how to solve problems like these.
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
ok we have the equation Q=mc(dT) where Q is heat, m is mass of whatever is changing temperature, dT is the change in Temperature.
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
the magnitude of the heat has to be the same for both the metal and the water
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
so you plug the known values into the heat equation for water and metal and set them equal to each other to find the specific heat you are looking for.
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
The magnitude of the heat is the same in both due to conservation of energy
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
so basically what would be the numbers in the equation to plug into the problem if is the same.
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
Your final equation would look like: 140*c*(7010)=220*4.186*(100) 140*60*c=220*10*4.186
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
and you want to find c in J/gC
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
so how would i find c
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
140*60*c=220*10*4.186 8400*c=9209.2 c=9209.2/(8400) c=1.1 J/gC
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
1.0963 would be c
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
so what units should i use for this problem?
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
that c is J/(gC) or Joules per gram degree Celsius
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
the energy in Joules it takes to change the temperature of 1 gram of metal 1 degree celsius
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
so would this be the same as 1.0963 cal/g degree Celsius ?
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
no 1 cal= 4.186 Joules
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
if you want calories divide your answer by 4.186
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
i don't think my answer is right
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
i have 0.2619
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
yep I think that's good
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
why dont you think it is right
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
i don't know because i think that my units wont match up with the right answer that i just put up there
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
im not sure what you mean
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
like should it say 0.2619 cal/g degrees Celsius, does that sound right?
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
oh yeah those are the units for specific heat
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
thank you so much I got it right thanks
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
you're welcome :)
 3 years ago
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