A backpacker wants to carry enough fuel to heat 2.0kg of water from 25 degrees C to 100.0 degrees C. If the fuel he carries produces 36kg of heat per gram when it burns, how much fuel should he carry? (For the sake of simplicity, assume that the transfer of heat is 100% efficient)

Q: A 45-g aluminum spoon (specific heat 0.88 J/g °C) at 24 °C is placed in 180 mL (180 g) of coffee at…

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Q: How much heat energy must be added in order to warm 1.00 grams of liquid mercury in a thermometer…

A: give information are- final temperature = Tf = 29°C initial temperature = Ti =10°C mass = m = 1 gm.…

Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

A: Interpretation- specific heat of aluminum Concept introduction- Specific heat- It is the amount of…

Q: If 20.0 g of copper cools from 35.0°C to 32.8°C and loses 38.6 Joules of heat, what is the specific…

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Q: A simple solar energy heater is a glass-topped box containing rocks. Sunlight heats the rocks during…

A: Specific heat capacity( C )is defined as the quantity of heat(Q) absorbed or released by m mass of a…

Q: If the temperature of a 95.00 g sample of Iron started at 36.0°C and ended at 58.0°C, how much heat…

A: Solution:    Specific heat is defined as the amount of heat required to raise the temperature of a…

Q: The density of a specific substance is 1.23 g/cm3. Likewise, it has a specific heat of .645 cal/g…

A: Given data,  Density of a substance = 1.23 g/cm3  Specific heat (s) = 0.645 cal/g°C  Mass of sample…

Q: 123. In a grammatically correct sentence or two (and in your own words), describe what heat and…

A: Heat and temperature, both are very important thermodynamic quantities. They both are quiet…

Q: Classify each process as exothermic or endothermic.(a) dry ice subliming (changing from a solid…

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Q: A 45-g aluminum spoon (specific heat 0.88 J/g °C) at 24 °C is placed in 180 mL (180 g) of coffee at…

A:

Q: How much heat, in units of Joules, is needed to warm 667.7 g of copper from 17 °C to 59 °C? The…

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Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

A: The heat is related to mass, temperature change, and specific heat of a substance as: q=mc∆T

Q: 79. If 89 J of heat are added to a pure gold coin with a mass of 12 g, what is its temperature…

A: Specific heat of gold, s = 0.13 J/g°C Heat, q = msΔT        89 = 12 x 0.13 ΔT       ΔT = +57.05°C…

Q: In a calorimetry experiment, a 49.4 g piece of metal at 118. °C is put into a cup of cool water that…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: 4 PCI3(g) + 1207 kJ → P4(s) + 6 Cl2(g) A) Endothermic, heat is produced B) Endothemic, heat is…

A: Given, a chemical reaction as follows,4PCl3(g)+1207 kJ→P4(s)+6Cl2(g)we are asked to classify the…

Q: 90. A 100-g block of iron metal and 100 g of water are each warmed to 75 °C and placed into two…

A: There are few terms which should be known to answer this question. Specific heat: It is the heat…

Q: It takes 770 joules of energy to raise the temperature of 50.0 g of mercury by 110-C. What is the…

A: Given  Heat q = 770 Joule Mass of mercury m = 50.0 g Temperature change ∆T = 110oC specific heat of…

Q: How much heat is required to warm 1.70 L of water from 30.0 °C to 100.0°C? (Assume a density of 1.0…

A: Given  Density of water  =  1 gram/mL  Volume of water  = 1.70 Liter                               =…

Q: A sample of metal with a mass of 28.5 grams is heated to 95.0, and placed in a calorimeter…

A: Given, For metal: mass of metal (mmetal) = 28.5 g Specific heat capacity of metal (spmetal) = ?…

Q: An amount of food is burned and releases 3600.0 of calories of energy. What mass of water can be…

A: The energy released by the burning of the food is = 3600.0 calories The change in the temperature of…

Q: A sample of water with a specific heat of 4.186 joules/gram is cooled from 45 degrees celsius to 25…

A: Given that, specific heat of water = 4.186 joules/(gram.oC) And the sample of water is cooled from…

Q: A simple solar energy heater is a glass-topped box containing rocks. Sunlight heats the rocks during…

A: Given that: Mass of rock (m) = 7.5×104 g Specific heat capacity (C) = 0.49 J/g°C Temperature change…

Q: How many joules are required to heat 65g of water from 12 degrees celsius to 76 degrees celsius?

A: The specific heat of water, i.e., the heat required to raise the temperature of 1 g of water by one…

Q: A piece of metal with a specific heat of 0.57 J g-1°C-1 at 1188 °C is dunked into a beaker…

A: Given,  Mass of water = Volume × density      = 369.7 × 1 = 369.7 g Heat capacity of metal(sm) =…

Q: A 489.9 gram sample of aluminum is initially at 25.7 C. It absorbs 38.27 kJ of heat from its…

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Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

A: Given data : Mass of copper(mc) = 18.9 gms Temperature of copper(Tc) = 99.38°C Mass of water(mw) =…

Q: The specific heat of aluminum is 0.897 J/goC. How many joules required to heat 22 grams of aluminum…

A: Specific heat of aluminium = 0.897 J/g.°C  Mass of aluminium = 22 grams  Initial temperature = 21.0…

Q: 67.3 g sample metal with specific heat of 0.246 J/g degrees celsius is heated by 1693 J of energy.…

A: Given data: Mass of metal (m) = 6.3 g, Specific heat of metal (c) = 0.246 J/g o C, Energy (E) = 1693…

Q: A piece of metal weighing 59.6 g with a specific heat of 0.59 Jg1°C-! at 1197.5 °C is dunked into a…

A: When the hot metal is dunked into the water, the heat is released by the metal and the equal heat is…

Q: A 49 kg sample of water absorbs 358 kJ of heat. If the water was initially at 28.4 ∘C, what is its…

A: The final temperature is calculated using the given formula,

Q: How much heat is needed to heat 25.00 grams water from 10.00 degrees C to 25.00 degrees C

A: Specific heat capacity (s) :- The amount of heat required to increase the temperature of one gram ia…

Q: How much heat, in units of Joules, is needed to warm 647.2 g of copper from 40 °C to 82 °C? The…

A: q = mc∆T q = heat  m = mass of copper  c = specific heat of copper  ∆T = change in temperature

Q: How many joules of heat are required to heat 125 g aluminum from 19 degrees C to 95.5 degrees C?

A: Given information:Mass of aluminum = 125 gInitial temperature = 19 ˚CFinal temperature = 95.5…

Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 142.0 g sample…

A: Given :-  Amount of heat needed = 11.7 kJ  Mass of substance = 142.0 g  Initial temperature = 51.2°C…

Q: A backpacker wants to carry enough fuel to heat 2.4kg of water from 25 C to 100.0 C. If the fuel he…

A: Given: Mass of water= 2.4 kg Initial temperature= 25 C Final temperature= 100.0 C

Q: How many joules of energy are needed to heat 7g of water from 105.0 C to 110.0 C?

A: With the help of the specific heat capacity of a substance,  mass and temperature change conversion…

Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

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Q: A typical recipe for a hot toddy (a drink often used as a cold remedy) is to mix hot water with…

A: Given, The amount of energy absorbed by 16 oz. of water is 33 kcal. The amount of hot water mixed…

Q: An adult eats food whose nutritional energy totals approximately 2100 Cal per day. The adult burns…

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Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

A: Given: The mass of iron taken = 19.7 g The initial temperature of iron = 99.34 ∘C The mass of water…

Q: Question 98

A: The specific heat capacity of Aluminium is 0.9 J/gm K And since the temperature in K is given by…

Q: Calculate the amount of heat required to raise the temperature of 245.0 gg (approximately 1 cup) of…

A: Given data,

Q: what is its final temperature?

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Q: A)   An iron nail with a mass of 12 gg absorbs 15 J of heat. If the nail was initially at 30 ∘C,…

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Q: How much heat is required to warm 1.60 kg of sand from 24.0 degree Celsius to 100.0 degree Celsius?…

A: The answer is given as follows

Q: If a glass of water and a lake have the same temperature, which has more thermal energy?

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Q: How many kilocalories of heat (energy) would it take to heat 141.0 g of water from 23.0 °C to 85.0…

A: Given How many kilocalories of heat would it takes to heat 141.0g of water from 23.0 °C to 85.0 °C?