When of an alloy at 100.0 oc is dropped into 100.0 g of water at 25.0 oC, the fi

Question

When of an alloy at 100.0 oc is dropped into 100.0 g of water at 25.0 oC, the final temperature is 37.0 °C. What is the specific heat of the alloy? Data for Water 4.184 J g 1 °C-1 specific heat water) (A) 0.423 J g-1 °C 1 (c) 9.88 J g-1 oC-1 (B) 1.77 J g 1 °CT o ni (D) 48.8 J g 1 °C-1 92. What is the standard enthalpy of combustion of C2H6 in kJ moh1? Thermochemical Data H2(g) 1/202(g) H200 A Hp 286 kJ C2H4(g) H2(g) C2H6(g) AHO- -137 kJ C2H4(g) 302(g) 2CO2(g) 2H20 (A) -1275 kJ (C) -1561 kJ (B)-1548 kJ (D) +1834 kJ 93. Calculate the value of AH for this reaction. C2H4(g) H2(g) C2H6(g) AH (kJ mor-1) Substance C2H4(g) 52.5 C2H6(g) -84.7 (A) -137.2 kJt (C) 32.2 kJ (B)-32.2 kJ (D) 137.2 kJ

Explanation / Answer

When of an alloy at 100.0 oc is dropped into 100.0 g of water at 25.0 oC, the fi

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