The following information is given for nickel at latm: boiling point = 2732 °C AHvap(2732 °C) = 379 kJ/mol melting point = 1453 °C AHfu(1453 °C) = 17.6 kJ/mol specific heat solid= 0.444 J/g°C specific heat liquid = 0.732 J/g°C |kJ are required to melt a 32.9 g sample of solid nickel, Ni, at its normal melting point.

18 Initial Length, Lo 70 cm Initial temperature, I 29°C Initial Dial Gauge Reading 0 Final temperature, T 91°C Final Dial Gauge Reading 86 In the experiment on Linear Thermal Expansion, the following data was obtained (refer to the data table shown). What is the expansion of the metal tube? * 0.86 cm 0.086 cm 8.6 cm 0.0086 cm

Water at 16.0 °C is sprayed onto 0.230 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that must be used? mw =

A machinist wishes to insert a copper rod with a diameter of 8 mm into a hole with a diameter of 7.996 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it fit the hole?  °C

We performed the experiment to measure the thermal conductivity of 2 materials (Brass & Steel) in the laboratory and measured the following tabulated values: Material 1- BRASS (Diameter = 25mm) %3D Power Temperature (°C) Q' 1 (W) 2 3 4 5 8 14.8 78.9 77.4 76 50 46.6 42.4 36 34.4 33.5 Material 2 - STEEL (Diameter = 25mm) Power Temperature (°C) Q' (W) 1 2 3 7 8 9 14.35 88.5 87.4 85 33.9 33.7 32.4

Solid honorite has a melting temperature of 261.05 K, and a heat capacity of 450.6 J/kgK. When it is liquid, its heat capacity is 568.6 J/kgK. The latent heat for the transition from solid to liquid is 15100 J/kg. Liquid odium has a freezing temperature of 331.96 K and a heat capacity of 439.8 J/kgK. When solid, its heat capacity is 343.8 J/kgK. The latent heat for the transition from solid to liquid is 11000 J/kg. A 4.42 kg block of honorite at 261.05 K is immersed in 14.17 kg of liquid odium at 390.01 K and left to achieve thermal equilibrium in an isolated, insulated container. How much energy was gained by the odium during this process? (A positive value means energy was added. A negative value means energy was lost.)

C=3.0*10°ms", m,=1.673*10"Kg, mn=1.675*102"Kg, Re=1.097*10'm, K=9*10°Nm°c?, F=9.6485309*10°Cmol', mol", la.m.u.=1.660569*10²" kg. ao=5.29*10'"m e=1.6*101°c, Eo=8.8*10-12Asvm², m,=9.1*103"Kg, h=6.62*10*Js, h/2T=1.05*10Js, NA=6.022045*10²3 -27 1-Find the atomic mass of the following elements CI, O and Pb; if M(CI)=35.45g, M(0)=16.00g and M(Pb)=207.20g? М(celement) m, atom N. 2-Find the radius of the nuclei of the following elements 1"1, 13Cs and 238U? "'muet = (1.3)A/3 *10-1$ m

Two copper blocks A and B have equal mass and temperatures of 300oC and 400oC, respectively. A third block (C), with a mass twice that of A, has a temperature of 350oC. Blocks A and B are placed in thermal contact and allowed to reach thermal equilibrium. Which of the following statements is correct? TA = TB < TC   TA = TB > TC   TA - TB = TC   TA + TB = TC   TA = TB = TC

275 g of cold water at 5.00 °C is mixed with 125 g of hot water at 80.0 °C. Assuming no energy is lost, what is the final temperature of the mixture? 21.6°C O 37.5 °C Ⓒ 28.4 °C 56.6 °C QUESTION 13 75 g of metal at 100 °C is mixed with 250 g of water at 20 °C and reaches an equilibrium temperature of 25 °C. What was the specific heat of the metal? 0.049 cal/g °C 9.8x10-3 cal/g °C 1.5 cal/g °C 0.22 cal/g °c

Water at 30.0 °C is sprayed onto 0.144 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that must be used? mw =