Q: If 16,000 cal of heat are added to 50 g of water initially had a temperature of 10°C, what is the…
A: Given: Mass m = 50 g Heat added Q = 16000 cal or 6694.4 joule Temperature initially Ti = 10o C To…
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Q: A 20 kg metal rod is heated 100°C with 2000 J of energy, What is the specific heat of the metal?
A: Given data: Mass (m) = 20 kg Increase in temperature (ΔT) = 100°C Energy (Q) = 2000 J Required:…
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A: Given that Heat used by radiator Q = 1.5 X 105 J
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Q: When a hot coffee is poured into a cup, how much heat is lost from the coffee to the 200-gram cup…
A: Mass m = 200 g Specific heat s= 0.20 cal/g-°C
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A: Heat = 699 kJ To find = Kilocalories
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A: A can of cola from United States contains 180 cal and a can contains same amount of cola from…
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A: Given data: Volume of water = 5.0 L = 5.0 × 10-3 m3 Initial temperature (T0) = 0 °C Final…
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A: Given data: Mass (m) = 500 g Initial temperature (Ti) = 20°C Final temperature (Tf) = 30°C…
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A: Write a given value of this question. Q=194kJ
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A: given,T1=10 °CT2=50 °Cthermal energy Q=8000 Jmass, m=20 kg
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A: Specific heat of 1 kg water is(c)= 4186 J/kg-oc Water equivalent of 5 kg substance is 1 kg Specific…
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How many calories of heat are required to raise the temperature of 4 kg of water from 50°F to the boiling point?
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- A student is trying to find the energy it takes to melt an ice cube. They measure exactly 95.1 mL of water and pour it into a styrofoam cup. They use a thermometer to find the initial temperature is 23.8 °C, and then drop an ice cube in the water, covering it and stirring until it is completely melted. After it has melted, the water cools to a final temperature of 16.5 °C. How much energy (in calories) did it take to melt this ice cube? Note: The density of water is 1.0 g/mL and the specific heat of water is 1.0 cal/(g·°C)The human body is not perfectly efficient. In fact, only about 20% of the Calories we consume are used for mechanical work (i.e., moving the body around). Estimate how many granola bars (150 Cal per bar) an 85 kg person will burn if they climb vertically up the side of the Empire State Building. height of Empire State Building, h = 443 m unit conversion: 1 Cal = 4184 JoulesOne ounce of a well-known breakfast cereal contains 99 Calories (1 food Calorie = 4186 J). If 2.4% of this energy could be converted by a weight lifter's body into work done in lifting a barbell, what is the heaviest barbell that could be lifted a distance of 2.0 m?
- When 345 g of water at 35.0 °C and 295 g of water at 63.0 °C are added together in a calorimeter, the temperature of the mixture becomes 46.9 °C. If the specific heat capacity of water is 4.18 J/g °C, how many kilojoules of energy are absorbed by the calorimeter?Carrie is trying to figure out the number of calories in a cube of cheese. To do this, she pours 166.2 mL of water into an aluminum can suspended from a ring stand. She takes the temperature of the water, and finds it to be 19.1 degrees Celsius. Then, she places the 5.23 gram cube of cheese under the can and lights it on fire! While the cheese is burning and for a few minutes after it is done, Carrie records the temperature of the water, finding that it levels out at 45.4 degrees Celsius. How many calories of heat were gained by the water? Please answer to the nearest 0.1 calorie.When someone has a fever, his or her body temperature might increase by as much as 2°C. Suppose this person has a mass of 48 kg. (a) About how much energy is required to raise a person’s temperature this much? The energy required to raise the person’s temperature is ___J (b) What is this energy in food calories? (1 food calorie ≡ 1 Cal ≡ 1000 calories = 1 kcal.) The energy in food calories is ___cal
- -1 Heat capacity of ice: 2090 J kg-¹ °C-1 Heat capacity of water (liquid): 4186 J kg-¹ °C-1 Latent heat of fusion: 3.36×105 J kg-¹ -1 Latent heat of vaporization: 2.26×107 J kg -1 Give your answers to at least three significant figures. Your answers must be accurate to 1%. How much heat energy is required to raise the temperature of 625 g of ice from a temperature of -50 °C to a temperature of -27 °C? J Submit Answer How much heat energy is required to raise the temperature of 625 g of water from a temperature of 43 °C to a temperature of 87 °C? J Submit Answer How much heat energy is required to raise the temperature of 625 g of water (initially ice) from a temperature of -50 °C to a temperature of 87 °C? J Submit Answer How much heat energy is required to evaporate 625 g of water which is initially at a temperature of 43 °C? JA ceramic container used for melting metals (called a crucible) contains 1.30 kg of a molten metal. The liquid metal cools until it reaches its melting point of 1,749°C. A scientist then measures that 2.99 ✕ 104 J of heat is transferred out of the metal before it completely solidifies. What is the latent heat of fusion of this metal, in J/g? (Be careful with units!)Muffins are taken out of the oven with a temperature of 200°F and are placed on a cooling rack with a room temperature of 70°F. After 15 minutes, the muffins have cooled to 170°F. If it is recommended to wait 30 minutes before eating, what temperature would the muffins be? Round the value of k to the nearest fourth decimal place.
- A mass of ice at -4°C is needed to cool 115 kg of vegetables in a bunker for 24 hours. The initial temperature of the vegetables is assumed to be 29°C. It is also assumed that, within the 24-hr period, the average temperature inside the bunker is 7°C. If the heat gained per hour in the bunker is 30% of the heat removed to cool the vegetables from 29°C to 7°C, what would be the required mass of ice in kg? Use: Specific heat of water 4.2292 kJ/kg-°C Specific heat of ice 1.9387 kJ/kg °C Specific heat of vegetables 3.35 kJ/kg-°COnly about 20% of the Calories we consume are used for mechanical work (i.e., moving the body around). Estimate how many granola bars (150 Cal per bar) an 85 kg person will burn if they climb vertically up theside of the Empire State Building. height of Empire State Building, h = 443 m unit conversion: 1 Cal = 4184 Joules35 g of copper pellets are removed from a 300 degree Celsius oven and immediately dropped into 100 mL of water at 10 degrees Celsius in an insulated cup. What will the new water temperature be?