A student measures the following data in a calorimetry experiment designed to determine the specific heat of aluminum. (Do not assume atmospheric pressure.) Initial temperature of water and calorimeter:         70°C Mass of water: 0.400 kg Mass of calorimeter: 0.040 kg Specific heat of calorimeter: 0.63 kJ/kg · °C Initial temperature of aluminum: 26.6°C Mass of aluminum: 0.200 kg Final temperature of mixture: 65.8°C Use these data to determine the specific heat of aluminum.

A student measures the following data in a calorimetry experiment designed to determine the specific heat of aluminum. (Do not assume atmospheric pressure.) Initial temperature of water and calorimeter: 70°C Mass of water: 0.400 kg Mass of calorimeter: 0.040 kg Specific heat of calorimeter: 0.63 kJ/kg · °c Initial temperature of aluminum: 26.5°C Mass of aluminum: 0.200 kg Final temperature of mixture: 65.9°C Use these data to determine the specific heat of aluminum. J/kg · °C

A 365-g sample of an unknown (nongaseous) material experiences a 16.0°C increase in temperature after absorbing 9.93 ✕ 103 J of energy. (a) What is the specific heat of this material? J/(kg · °C)(b) Which substance listed in the specific heat and molar specific heat table best matches the specific heat of this unknown material? mercurysilver    brassgraniteglassaluminumwoodseawater

The temperature of a 5.00-kg lead brick is increased by 525 C°. If the specific heat capacity of lead is 128 J/(kg.C°), what is the increase in the mass of the lead brick when it has reached its final temperature? O 5.80 × 10- -11 kg O 9.12 × 10-11 kg O 1.60 × 10-12 kg O 3.73 × 10-12 kg O 2.80 × 10-12 kg

Question 1: What is the heat transfer in KJ,  between the container and the surroundings as the helium gas cools from 151.5ºC to 100ºC?  Subject 1: There is 7.752 moles of helium gas (He) at 151.5ºC in a sealed container. The helium gas is gradually cooled to 59.52ºC, undergoing compression in the process. Subject 2: The molar heat capacity of aluminum is 24.3 J/mol·K. The molar heat capacity of helium gas is 12.7 J/mol·K. The enthalpy of fusion of aluminum is 10.5 kJ/mol.

Measurement of specific heat of metals Aluminum Cupper Mass of inner cup of calorimeter mcal, g 50 50 Specific heat of calorimeter Ccal, cal/(g °C) Specific heat of water Cw, cal/(g °C) 0.217 0.217 1.00 1.00 Mass of metal Mm, g 80 140 Mass of inner cup + water mcal + Mw, g 220 240 Mass of water Mw, g 170 190 Initial temperature of calorimeter and water to, °C Initial temperature of metal tm, °C 22 22 100 100 Final equilibrium temperature tr, °C 30 26 Thermal energy gain by calorimeter and water Qgain, cal Specific heat of metal Cm, cal/(g °C) Standard specific heat of metal Cst , cal/(g °C) 0.217 0.093 |% error Thermal energy lost = Thermal energy gained Thermal energy Q = cmAt %3D %3D Specific heat C |Thermal energy lost by metal = Thermal energy gained by (water + calorimeter) %3D EmMm(tm-tf)=(ccatMeat +CwMw)(tp- to) %3D (Ccaimcal+ Cymw)(tf- to). Gm = %3D Mm(tm - t;) |