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a session.masteringchemistry.com Watch Ge UMCP TA spenvelluumd hoste. Careers4T SigniniCopenvellu.. The Phant. Course Ha. O Masten. delta enth Exercise 10.44 with feedback e previous 7 of 21 Inext . Exercise 10.44 with feedback You may want to reference (page ) section 10.4 while completing this problem An unknown mass of each of the folowing substances, initialily at 250 C. absorbs 1910 J of heat. The final temperature is recorded as indicated. Find the mass of each substance Part A a, Pyrex glass (Tf=557-c) Express your answer using two significant figures m 74 ncorrect; Try Again; 4 attempts remaining Part B sand (7-620° C) Express your answer using two significant figures

Explanation / Answer

heat supplied(q) = m*s*DT

specific heat of pyrex glass = 0.753 j/g.c

   DT = 55.7 -25 = 30.7 c

m = mass of pyrex glass = ?

     1910 = m*0.753*30.7

m = 83 grams

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