Lab: Calorimetry and Specific Heat

Question 1

Question 1

Revolt · Accepted Answer

oil would transfer heat the best because its specific heat is: sesame; lowest.

Question 2

▪ Then, you shined✔ heatedmelteddissolved the metal and added it to water in the calorimeter.

Revolt · Accepted Answer

✔ heated

Question 3

▪ After heat transferred from the metal to the water, you measured the density✔ temperature changevolume specific heat of both materials.

Revolt · Accepted Answer

✔ temperature change

Question 4

✔ ironlead, would make the best cookware and therefore may be the best choices overall.

Revolt · Accepted Answer

✔ iron

Question 5

▪ First, you measured the ✔ massweightdensityvolume of the metal and the water inside the calorimeter.

Revolt · Accepted Answer

✔ mass; of the metal and the water inside the calorimeter.: mass; the metal and added it to water in the calorimeter.: heated; of both materials.: temperature change

Question 6

You computed the specific heat for each of the four metals using the formula below: C metal equals StartFraction negative C water m water delta T water over m metal delta T metal EndFraction. Check all items that you used, either directly or indirectly, each time you did this computation.

Revolt · Accepted Answer

the first law of thermodynamics (heat lost by a metal equals the heat gained by the water); the ability of heat to flow from a hot object to a cooler one; masses for the metal and the water in the calorimeter; temperature changes for the water and the metal; the known specific heat of the water

Question 7

Considering only specific heat, aluminumcopperiron✔ lead would be the most ideal for use in cookware.

Revolt · Accepted Answer

✔ lead

Question 8

The buret clamp was used to stabilize the buretcalorimetertemperature✔ thermometer, and the beaker was used to

Revolt · Accepted Answer

✔ thermometer; , and the beaker was used to: thermometer; calorimeter.

Question 9

Why did you use two coffee cups during the experiment instead of just one cup?

Revolt · Accepted Answer

to prevent heat from escaping from the calorimeter

Question 10

A student who did the same experiment that you did determined the specific heat for all of the metals. His values were all 0.10 to 0.20 less than the actual specific heat values. Select all possible sources of this error listed below.

Revolt · Accepted Answer

The metals were not heated to 100°C.; The metals cooled before they were added to the water.; The thermometer was not completely submerged in the water while reading.; The calorimeter was not sealed properly, so heat escaped.

Lab: Calorimetry and Specific Heat Answers

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