Which statement describes the following reaction? Select one: It is exothermic and releases 68.3 kilocalories. It is endothermic and releases 68.3 kilocalories. It is endothermic and absorbs 68.3 kilocalories. It is exothermic and absorbs 68.3 kilocalories

Q: Use the following calorimetric values to answer the question: The specific heat capacity of water…

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Q: How many calories are in 9671 kilojoules ? (1 cal = 4.184 J)

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Q: Initial mass of food sample (g) 1.93 Final mass of food sample (g) 0.4: Initial temperature of water…

A: Given: Mass of Water =113.65g The initial temperature of water= 22.00 oC The final temperature of…

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A: Recall the following expression according to law of calorimetry                     Amount of heat…

Q: 22) Identify the Lewis Acid and Lewis Base in the following reaction. FeBra O a) Lewis Acid=1 b)…

A: Given: Identify the Lewis Acid and Lewis Base A Lewis acid is a substance or species that can accept…

Q: If the initial temperature of 120. g of ethanol is 20. °C, what will be the fi nal temperature after…

A: Given : Heat energy added = 950 cal mass of ethanol = 120 g Initial temperature (T1) = 20°C

Q: Use the image to answer the question. Which kind of reaction is shown in this image? 1 point warm…

A: It is an endothermic reaction because the system takes energy from the surroundings.Explanation:The…

Q: Question Calculate the Caloric content present in 100 g of brown bread. It contains 54 g of…

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Q: 3. The density of water at 25 °C is 0.997 g/mL and the density of vegetable oil at this temperature…

A: Endothermic process: it is a thermodynamic process where the enthalpy (H) of the system icreases.…

Q: What is the temperature change for the calorimeter reaction shown in the graph below? 38.1 30…

A: Chemical processes' enthalpy changes can be computed based on how they affect the surrounding…

Q: Calculate the calories lost when 65g of water cools from 45 degrees Celsius to 25 degrees Celsius.

A: mass of water (m) = 65 g Initial temperature (Ti) = 45°C Final temperature (Tf) = 25°C Amount of…

Q: A156 1gram sample of an unknown metal at88.1°C was mixed with 319.0grams of22.6°C water in a…

A: Mass Of the metal = 156.1 gInitial temperature of the metal = 88.1 0CMass of water = 319 gInitial…

Q: While digging at the beach, you have come across what looks like a gold Thinking it too good to be…

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Q: Based on the balanced thermochemical equation: 4 NO + 6 H2O → 4 NH3 + 5 O2   ΔH = +(8.880x10^2) kJ…

A: Given, 4 NO + 6 H2O → 4 NH3 + 5 O2   ΔH = +(8.880x102) kJ mass (in grams) of H2O are required to…

Q: The following thermochemical equation is for the reaction of nitrogen(g) with oxygen(g) to form…

A: 66.4 kJ energy will cause reaction of 28 g N2 gas. So, mass of N2 will react by providing 20.8 kJ…

Q: Question: When 5.12 g of NaOH were dissolved in 51.55 g of water in a calorimeter at 24.5 °C, the…

A: Given: Mass of NaOH = 5.12 g Mass of water = 51.55 g Initial temperature of water = 24.5oC Final…

Q: Use the following calorimetric values to answer the question: The specific heat capacity of water…

A: • For water,mass of water (mwater) = ?Specific heat capacity of water (swater) = 4186 J/kg.°C =…

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A: q = mc∆T  q is the amount of heat energy required  m is the mass of substance  c is the specific…

Q: A 31.80 g sample of a substance is initially at 20.0 °C. After absorbing 1717 J of heat, the…

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Q: A 2.5 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial…

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Q: . An amount of 125.0 gram of iron fibers has been heated from 39.0 °C to 127 °C. How much heat was…

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Q: Mixing 50 ml of HCI ( 2.0 M) with 50 ml of NaOH ( 2.0 M ) raises the temperature of the calorimeter…

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Q: O Macmillan Learnin A student places a block of hot metal into a coffee cup calorimeter containing…

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Q: How many calories are in 8671 kilojoules ? (1 cal = 4.184 J)

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: Use the set of three reactions shown below to answer the questions that follow. 2NO2(g) 2NO (g)O2(g)…

A: Let ‘x’ be the amount of heat released by 50.3g of NO.

Q: If the water in a coffee cup calorimeter absorbed 300 J of energy (q = +300 J) during a reaction…

A: Energy absorbed by water in coffee cup calorimeter = 300 J qwater = + 300 J

Q: Rank the kinetic energy of each from lowest to highest. A 9.5 mg insect moving at 17.6 cm/s.  A 10.3…

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Q: If the initial temperature of 120. g of ethanol is 20.0°C, what will be the final temperature after…

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Q: Answer in joules and calories. Energy required to heat 5.25 g of water from 5.5 °c to 64.8 °c.…

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Q: mass of water

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Q: How many calories are required to heat 100.0 g of water from -15.0 oc to 15.0 oc?

A: Amount of heat required to raise the temperature is given by the following expression

Q: Question 1 of 26 When a 120 g sample of hydrocarbon is burned in a bomb calorimeter the temperature…

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A: The heat in a calorimeter, qcal is given as : The heat change of a reaction in a calorimeter, qrxn…

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Q: When a 120 g sample of hydrocarbon is burned in a bomb calorimeter the temperature changes from 25…

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Q: How many J of energy are needed to raise the temperature of 36.5 g of water from 21.55°C to 57.32°C?…

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