Name: In Class Assignment #8 1 Determin the specfe heat capacity of an al that r

Question

Name: In Class Assignment #8 1 Determin the specfe heat capacity of an al that roquires 59.3 kJ to raise the temperature of 150.0 g alloy from 298 K to 398 K 2. A 21.8 g sample of ethanol (C,H,OH) is burned in a bomb calorimeter, according to the following reaction. If the temperature rises from 25.0 to 62.3°C, determine an in L/mol. The heat capacity of the whole calorimeter is 15.7 krc. C,H,0H(I) + 30, (g) 2 CO2(g)+3H,0(g) ATheporzatio ing proxceses seandothermic? B) A hot cup of coffe(system) cools on a countertop 3. Which of the A) The vaporization of rubbing alcohol. is d) D) The chemical reaction in a "hot pack"often used to treat sore musc ion in a "hot pack" often used to treat sore muscles. E) The combustion of propane. 4. According to the following reaction, how much energy is required to decompos of Fe30The molar mass of Fe3O4 is 231Ssgmol. 2. Write th rxn Moler

Explanation / Answer

Ans 1 :

The heat can be calculated by the formula : m . c . delta T

m = mass in grams

c = specific heat

delta T = change in temperature

59300 = 150.0 x c x (398 - 298)

c = 3.95 J/goC

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