Due: Tomorra All changes saved 2. Why do you cook with metal pots and pans? O Metal has a high heat capacity, which allows it to heat up faster and transfer the heat to the contents of the pot or pan. Metal is a poor conductor of heat. Metals are shiny, and the shininess reflects light, causing it to heat up faster. Metal has a low heat capacity, which allows it to heat up faster and transfer the heat to the contents of the pot or pan. PREVIOUS 2 of 5 NEXTI SAVE & EXIT

Due: Tomorra All changes saved 2. Why do you cook with metal pots and pans? O Metal has a high heat capacity, which allows it to heat up faster and transfer the heat to the contents of the pot or pan. Metal is a poor conductor of heat. Metals are shiny, and the shininess reflects light, causing it to heat up faster. Metal has a low heat capacity, which allows it to heat up faster and transfer the heat to the contents of the pot or pan. PREVIOUS 2 of 5 NEXTI SAVE & EXIT

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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1. The metabolism of one mole of glycerol trioleate, C5 H9306, a common fat, produces 3.022 x 10¹kJ of heat. How many grams of the fat must be burned to raise the temperature of 50 g of water from 25.0°C to 30.0°C? 2. A metal sample having a temperature of 100°C and a mass of 45.2 g was placed in 50 g of water with a temperature of 26°C. At equilibrium, the final temperature was 32.7°C a) How much heat flowed into the water? b) What is the specific heat of the metal?
A sample of copper absorbs 44 kJ of heat, resulting in a temperature rise of 65 °C. Determine the mass (in kg) of the copper sample if the specific heat capacity of copper is 0.385 J/g°C.
1.Two solid objects, A and B, are placed in boiling water and allowed to come to the temperature of the water. Each is then lifted out and placed in separate beakers containing 1000 g of water at 10.0 °C. Object A increases the water temperature by 3.50 °C; B increases the water temperature by 2.60 °C. a. Which object has the larger heat capacity? b. What can you say about the specific heats of A and B?
When a water heater containing 118.9 liters of water is turned off, the temperature of the water drops from 75.0 °C to 22.5 °C. How much heat (in KJ) is lost to the environment? (assume that the density of the water is 1.00 g/ml).
Gasoline and ethanol can both be used as a fuel source in cars. However, the potential chemical energy is not equal. A fuel mixture uses 85% ethanol and 15% gasoline called E85. Assume a car is rated at 28.0 miles/gallon using gasoline only at $3.50/gallon and 22.5 miles/gallon using E85 at $2.85/gallon. How much would it cost for using each fuel to drive 500.0 miles?
A metal object with mass of 20.9 g is heated to 97.0 °C and then transferred to an insulated container containing 83.1 g of water at 20.5 °C. The water temperature rises and the temperature of the metal object falls until they both reach the same final temperature of 23.9 °C. What is the specific heat of this metal object? Assume that all the heat lost by the metal object is absorbed by the water. specific heat: cal TOOLS x10 DII DD F4 F5
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A 151.6-g sample of a metal at 74.7°C is added to 151.6 g at 15.9°C. The temperature of the water rises to 18.2°C. Calculate the specific heat capacity of the metal, assuming that all the heat lost by the metal is gained by the water. The specific heat capacity of water is 4.18 J/°C ⋅ g. Specific heat capacity = ________J/°C ⋅ g
1. ethylene glycol 2. Substance 3. brass glass 4. vegetable oil Specific Heat Capacity (J/g °C) 2.47 I 0.377 0.837 1.97 A 50 g sample of each of the above materials, each with an initial temperature of 21.0°C, had the same quantity of thermal energy added to them. If they were listed from the highest final temperature reached to the lowest final temperature reached, the order would be ◆ and ◆ I 660 kJ of thermal energy are added to 2000 g of vegetable oil in a fondue pot. The vegetable oil had an initial temperature of 21.3 °C. Assume that the thermal energy absorbed by the fondue pot is negligible. The final temperature of the vegetable oil would be °C. Record your 3-digit answer; do not include units.
1. Melted methane was ignited and used to heat water in a thin metal container. After a short period of time, the methane was extinguished and final measurements were made. = 7.52 g = 7.20 g Mass of methane before burning Mass of methane after burning Mass of water in container Initial temperature of water Final temperature of water = 140.0 g = 10.0°C = 32.0°C a) Using this data, calculate the heat of combustion of methane in kJ/mol. Assume that all the heat from the methane was absorbed by the water b) Write the thermochemical equation for the complete combustion of methane.
part b) is your answer to part a closer to 88.5 degrees Celsius or closer to 10 degrees celsius? Briefly explain why this would be the case.
Together, a pure gold ring and a pure titanium ring have a mass of 15.07 g. Both rings are heated to 94.90 °C and dropped into 13.0 mL of water at 16.80 °C. The water and the rings reach thermal equilibrium at a temperature of 24.20 °C. The density of water is 0.998 g/mL... The specific heat capacity of water is 4.18, the specific heat capacity of gold is 0.129 and the specific heat capacity of titanium is 0.544 Calculate the mass of each ring. mass of gold ring: mass of titanium ring: 50 60