Chem Calorimeter help please!! Note: to use scientific notation, enter 2.6 1016

Question

Chem Calorimeter help please!!

Note: to use scientific notation, enter 2.6 1016 as 2.6e16 All queslions must be onswered in order Question #1 You added 50.0 g of room temperature water to the styrofoam cups calorimeter and then added 50.0 g of hot water. room temp waterhat water tinal 57.0 °C 37.6 C C 3.2 C 20.5 °C 5 oc Trial #1 Trial #2 20.5°C 58.0 Part 1: Use your data from lable 7-1 provided above to determine the calorimeter oonstant for the nested Styrofoam cups. Enter the results for l rial #1 and 1rial #2in the table below If you need a review of how to perform these calculations, see the lab book. 481 lease check your results and recalculate if necessa Coffee cup calorineter constant (Trial #2) Please review ynur entries and make corrertions where Part 2: Enter the average calorimeter constant for the nested Styrofoam cups. Average coffee cup calorimeter constant Submi

Explanation / Answer

Heat lost by hot water = heat gained by cold water + heat gained by calorimeter

mh x Cpw x (Th - Tf) = mc x Cp x (Tf - Tc) + C x (Tf - Tc)

For trial 1

50 x 4.184 x (57 - 37.6) = 50 x 4.184 x ( 37.6 - 20.5) + C x ( 37.6 - 20.5)

4058.48 = 3577.32 + 17.1 C

C1 = 28.13 J/K

For trial 2

50 x 4.184 x (58 - 38.2) = 50 x 4.184 x ( 38.2 - 20.5) + C x ( 38.2 - 20.5)

4142.16 = 3702.84 + 17.7 C

C2 = 24.82 J/K

Average C =( 28.13 + 24.82) /5

= 26.475 J/K

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