Determine the total kilojoules in two tablespoons of crunchy peanut butter that contains 2 gg of carbohydrate, 17 gg of fat, and 9 gg of protein.

Q: The Nutrition Facts on a 12-pack of Dr. Pepper specify that a single serving is one can and that a…

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Q: Classify the processes as endothermic or exothermic. Endothermic Exothermic

A: Endothermic                  Ice melting                          Baking a cake  the chemical…

Q: What is the kinetic energy of a baseball with a mass of 117.7 g traveling at a speed of 1.377 m/s?

A: Given, Mass of a baseball (m) = 117.7 g = 0.1177 kg Speed of a baseball (v) = 1.377 m/s Kinetic…

Q: which has more calories : table sugar or aspartame ? what does synthetic gas (water gas) consist of…

A: Aspartame  is an artificial non saccharide sweetener, while table sugar is a natural disaccharide…

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…

Q: 5. A block of copper of unknown mass has an initial temperature of 65.4 °C. The copper is immersed…

A: Given, Initial temperature is = 65.4°C. Mass of water is = 95.7 g Temperature of water is = 22.7°C…

Q: A typical diet might include 2000 Calories coming from food intake on a daily basis. How many…

A: Amount of energy from food = 2000 Calories Convert this in Kilojoules = ?

Q: On a 16.5 ounce bag of potato chips, the manufacturer states that the single serving is one ounce,…

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Q: Perform the conversions between energy units. 6.00×102 kJ=__________ J 2585 kcal= ____________ kJ…

A: According to the unit conversion, 1 kJ is equal to 1000 J. Thus, the conversion into J is shown…

Q: Calculate energy content in kcal for food containing fat 16g carbohydrates 27g Protein 8g in kcal

A: The question is based on the concept of biomolecules.We need to calculate total energy content of…

Q: Answer the following questions using the energy values for foods in the table. Do not round off any…

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Q: Calculate the calories needed to heat 7.9 grams of water from 15 degrees Celsius to 33 degrees…

A: Mass of water (m) = 7.9 g Initial temperature (Ti) = 15°C Final temperature (Tf) = 33°C Calories…

Q: When 481 J of energy is added to 18.3 g of aluminum at 17.4°C, the temperature increases to 46.6°C.…

A: the heat capacity for aluminium is :

Q: A student places a block of hot metal into a coffee cup calorimeter containing 162.2 g of water. The…

A: 162.2 g of water.T1 = 21.3 oCT2 = 37.6 oC

Q: What is the kinetic energy in joules of a 1030-kg automobile traveling at 86 km/h?  What is the…

A: Kinetic energy of the moving particle depend on its mass and velocity .

Q: A 1533 kg car is traveling down the road at 99.0 km/h. While traveling at this rate of speed, what…

A: Here we use the formula of kinetic energy K.E = 1/2 m* V^2 Where m = mass of car = 1533 kg V =…

Q: Choose the endothermic process  butter turning rancid, photosynthesis of carbohydrates by plants,…

A: Endothermic processes are those in which heat is absorbed in the reaction whereas in exothermic…

Q: A 65 kg person walking 6.5 km/hr requires 1390 kJ of energy per hour. How much further does he have…

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Q: The table lists the specific heat values of several substances. An unknown substance has a mass of…

A: Mass of substance = m = 16.3 g Temperature increased by Means change in temperature = ∆T = 12.5°c…

Q: Which statement is true about endothermic and exothermic reactions?  Energy is absorbed in an…

A: Exothermic reactions are the reactions in which energy is released from the system to the…

Q: One gram of fat gives off approximately 9.86 kilocalories of energy when metabolized. How many…

A: Given: Energy in Kcal = 9.86 Kcal.

Q: A gram of gasoline produces 45.0 kJ of energy when burned. Gasoline has a density of 0.77 g/mL. How…

A: The density of gasoline = 0.77 g/mLAlso given the amount of heat energy produced by burning one gram…

Q: Calories

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Q: Convert 27.0 kJ to calories. Hint: Notice the little c in calories. 1 calorie = 4.184 joules 1…

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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…

A: This problem is based on calorimeter where we need to find out Caloric value of the French…

Q: How much heat, in joules and in calories, must be removed from 2.13 mol of water to lower its…

A: Given information is as follows: The number of moles of water = 2.13 mol The initial temperature…

Q: Quantity Mass of can (g) 12.695 mass of can and water (g) 125.129 Initial mass of food sample (g)…

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Q: Given the following potential energy graph, identify the correct statement. Energy CO + 2 H2 AH =…

A: Potential energy digram represent the graph of change in potential energy of reactant converted into…

Q: 7. A piece of unknown metal weighs 348 g. When the metal piece absorbs 6.64 kJ of heat, its…

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Q: Suppose that a person eats a diet of 2383 Calories per day. Convert this energy into joules.

A: Suppose that a person eats a diet of 2383 Calories per day. This energy is to be converted into…

Q: Suppose you heat a metal object with a mass of 31.8 g to 96.8 °C and transfer it to a calorimeter…

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Q: Two aqueous solutions are both at room temperature and are then mixed in a coffee cup calorimeter.…

A: Endothermic reactions : The reactions in which heat is absorbed are called exothermic reactions.…

Q: What is the specific heat of 20.0 g piece of an unknown substance that changes from 25°C to 75°C…

A: Heat required to raise the temperature of the substance through 1°C is known as specific heat of the…

Q: How much heat, in joules and calories, is needed to heat up 1.00 mL of water from 22.3°C to 87.6°C?

A: We have given that Volume of water= 1ml We know that  Density of water = 1g/ml Mass of water = 1g…

Q: A hot 105.0 g lump of an unknown substance initially at 152.2 °C is placed in 35.0 mL of water…

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Q: A block of aluminum of unknown mass has an initial temperature of 58.6°C. The aluminum is immersed…

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Q: A metal sample weighing 120.00 grams and at a temperature of 98.6 degrees Celsius was placed in…

A: The change in temperature of metal is calculated as,

Q: A gas is compressed from an initial volume of 5.65 L to a final volume of 1.23 L by an external…

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

Q: A student is collecting data for the reaction of baking soda and vinegar. The initial temperature of…

A: Exothermic and endothermic reactions are two types of chemical reactions that differ in the way they…