Show how his results would have been affected if some of the white compound had

Question

Show how his results would have been affected if some of the white compound had been washed down the sink before it was dried and re weighed the silver strip was not thoroughly dried when it was reweighed A sample of silver (106.00 g) was heated inside a dry test tube in a water bate until the silver was at the same temperature as the water (98.6 C). The silver metal was quickly transferred to 50.0 g of room-temperature water (24.5 C) and allowed to transfer its excess heat to the water. At the highest temperate reached, the water and metal sample reached a temperature of 32.4 C. Find the specific heat of silver. The specific heat of water is 4.186 J/g.C. heat absorbed by the water q=mc delta t heat released by the silver = neat absorbed by water = mc delta t Describe how you would determine the percentage water of hydration a formula of the hydrate in lab.

Explanation / Answer

3) Heat lost by silver is given as:

qsilver = - msilver * csilver * (Tf-Ti) = - 106*csilver * (34.2-98.6) = 6826.4csilver

heat gained by water is:

qwater = mwater*cwater*(Tf-Ti) = 50*4.186*(34.2-24.5) = 2030.2

qsilver = qwater

Csilver = 2030.2/6826.4= 0.297 J/gC

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