just 7,8 and 9 :) DULlIC Tieal Capacity of silicon if it takes 192 J to raise th
ID: 1039454 • Letter: J
Question
just 7,8 and 9 :)
DULlIC Tieal Capacity of silicon if it takes 192 J to raise the temperature of 45.0 g of Si by 6.0 degrees C 5. Titanium metal is used as a structural material in many high-tech applications such as in jet engines. What is the specific heat capacity of titanium if it takes 89.7 J to raise the temperature of a 33.0 g block by 5.20 degrees C? How much heat is needed to raise the temperature of 275 grams of water from 0 degrees C to 100 degrees C? 6. 7. What would the final temperature of a mixture of 100 g of water at 90 degrees C and 600 g of water at 20 degrees C? What would be the final temperature if a 2 kg piece of lead at 200 degrees C is inserted in a container with 10 kg of water at 50 degrees C? 8. 9. In a calorimeter, 100.0 g of H20 and 100.0 mL of HCI are mixed. The water was originally at 24.6 degrees C. After the reaction, the temperature of both substances is 31.3 degrees C How much heat was transferred? 10. A piece of metal weighing 59.047 g was heated to 100.0 degrees C and then put it into 100.0 g of water (initially at 23.7 degrees C). The an equilibrium temperature, determined to be 27.8 degrees C. Assuming no heat lost to environment, calculate the specific heat of the metal. (Hint: First calculate the heat absorb by the water then use this value for "Q" to determine the specific heat of the metal in a second calculation) metal and water were allowed to come to edExplanation / Answer
7.
Heat change = mass * specific heat * change in temperature
total heat lost + total heat gained = 0
100 * 4.184 * ( t2 - 90 ) + 600 * 4.184 * ( t2 - 20 ) = 0
418.4 t2 - 37656 + 2510.4 t2 - 50208 = 0
2928.8 t2 = 87864
t2 = final temperature = 30 degree C
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.