Can someone help me on all these questions? 1. A 185 gram sample of copper at 98

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Can someone help me on all these questions?

1. A 185 gram sample of copper at 980 c was added to 102 grams of water at 20 c The final temperature of the copper water mixture was 31rc. Calculate the specific heat of copper usingthis data hemistry student added luminum 85.0"C 115 grams of water at 230 Cin a perfect calorimeter. The final temperature of the aluminum water mixture was 41.4 Use this student's data to calculate the specific heat of aluminum in joule 9ram C 0117 3. A cubic block of uranium metal (specific heat g "C at 200.0 is dropped into 100 Lof of heavy water" heat 4211 J g c 9at 25.5 'c The final temperature of the uranum and the deuterium oxide mixture 28.5 Given the densities of uranium l190s gicmI and deuterium oxide a 11 muy hat the side of the uranium cubet To solve for this you wel have te Determine the mass of uranam dropped into the Do we assume the hest lost by the uranum equals the heat gained by the water using the equation we dscuesed use the to ENculate the volume he length by using volume and length of a cube 1750 g put 100 calorimeter and chaled to 9.60 g pure Hason at ddetl stirred and the temperature rose to 19

Explanation / Answer

1)

m = 185 g of Cu

Tc = 98 °C

Tw = 20 °C

m = 102 g of W

Tf = 31.2 °C

Solve for Cp of copper

Qc = Qw

-mc*Cpc*(Tf-Tc) = mw*Cpw*(Tf-Tw)

substitute

Cpc =  -mw/mc*Cpw*(Tf-Tw)/(Tf-Tc)

Cpc =  -102/185*4.184*(31.2-20)/(31.2-98)

Cpc = 0.386777 J/gC

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