(Solved): In aluminum calorimeter with a mass of 100g contains 250g of water. The calorimeter and water a ...

In aluminum calorimeter with a mass of $$100\mathrm{g}$$ contains $$250\mathrm{g}$$ of water. The calorimeter and water are in thermal equilibrium at $$0.0^{?}\mathrm{C}$$. Two metallic blocks are placed into the water. One is a $$150.0?\mathrm{g}$$ piece of copper at $$40.0^{?}\mathrm{C}$$. The other has a mass of 70.0 ind is originally at a temperature of $$100^{?}\mathrm{C}$$. The entire system stabilizes at a final temperature of $$20.0^{?}\mathrm{C}$$. Specific Heats of Some Substances at $$25^{?}C$$ and Atmospheric Pressure Note To convert values to units of cal/g - "C, divide by 4.186. (1) (a) Determine the specific heat of the unknown sample. $$\mathrm{J}/\left(\mathrm{kg}+{}^{?}\mathrm{C}\right)$$ (b) Using the data in the table above, can you make a positive identification of the unknown material? Yes No Can you identify a possible material? Yes No