The_needed to raise one gram of water one degree celsius is called a calorie. A. kilocalories B. heat C. enthalpy D. potential energy

Q: how much heat must be added to heat 0.750g of water from 20.0° to 40.0°

A: When heat is added to a substance the temperature will change in a certain amount. the amount of…

Q: Convert between energy units. a. 231 cal to kJ b. 132 x 10* kJ to kcal d. 2.88 x 10* J to Cal c.…

A: Convert between energy units. (a) 231 cal to kj (b) 132 × 104 kj to kcal (c) 4.99 × 103 kj to kWh…

Q: What is the kinetic energy in J and cal of a 45-g golf ball moving at 61 m/s?   168 J, 40 cal B.…

A: Given, Mass of golf ball = 45g

Q: Select every statement that is true about heat, temperature, and phase changes.

A: a- At 100° C, water is boiled which is its boiling point and it turns into vapour phase So it is a…

Q: Classify each of the following chemical changes as exothermic or endothermic reaction. Chemical…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: The following bar graph shows the starting and highest/lowest temperatures reached for four…

A: Given,  The temperature is related to the heat energy.  The temperature of the solution increases…

Q: Of the following examples, which is exothermic? A. dissolving ammonium nitrate in water to cool the…

A: Exothermic reaction: Heat is evolved in reaction. Endothermic reaction: Heat is absorbed in the…

Q: The specific heat of silver is 0.24 J g*C. How many jules of energy are needed to arm 4.37 g of…

A: Given, Specific heat = 0.24 J/g°C m = 4.37 g Final temperature, Tf = 27.5°C Initial temperature, Ti…

Q: The standard unit used in heat measurements .   a. specific volume b. specific heat c. calorie

A: Energy is the capacity to do work. There are different types of energy. Heat is a form of energy. It…

Q: Which sample will reach the lowest final temperature when all samples evolve 12.5 J of heat and all…

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Q: A well insulated calorimeter contains 100 ml of water. 0.100 mal of solid potassium nitrate is added…

A: A calorimeter is an apparatus with insulating walls, used for measuring the heat changes before and…

Q: A food contains 50 grams of carbohydrate and has a total 200 kilocalories. What is the percentage of…

A: To calculate the percentage of calories from carbohydrates, you need to consider that carbohydrates…

Q: 10.0 g sample of metal at 78 C is submerged in 50.0 mL of water at 25 C, the final temperature of…

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Q: Calculate the quantity of heat, in kilojoules, required to raise the temperature of 9.25 L of water…

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Q: A 752mL sample of water was placed in a 1000g aluminum pan. The initial temperature of the pan was…

A: Given Mass of aluminium = 1000 g Initial temperature = 26oC Final temperature = 39oC C = 0.9025 Jg°C

Q: Whenever energy is transformed from one form to another, some of the energy is always converted into…

A: Energy is neither created nor destroyed it is transformed.However this transformation process is not…

Q: Matter undergoing chemical reactions and physical changes that absorb heat can be classified as…

A: Given, Matter undergoing chemical reactions and physical changes that absorb heat can be classified…

Q: How does the ocean affect coastal climate? A. The specific heat capacity makes the coast colder in…

A: Specific heat capacity of a substance is the amount of heat required to raise the temperature of the…

Q: amount of heat required to raise 1 g of water 1°C    a. BTU b. calorie c. joule d. kJ

A: The mass of water in gram = 1 g The temperature of water  = 1oC

Q: CH 4(g) +2O 2(g) CO 2(g) +2H 2 O (l) If 185.4 grams of C*H_{4} react with excess O_{2} how many…

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Q: Label each of the following statements as true or false. Iffalse, correct the statement.a. Energy…

A: a) The given statement is False because according to the law of conservation of energy (E), energy…

Q: consider the following metals, A, B, C and D at room temperature.  10 g of each metal absorbs 15 kJ.…

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Q: A hot cup of tea placed near an open window to cool. Which of the following statements best…

A: The given statement is : A hot cup of tea placed near an open window to cool.

Q: The specific heat of aluminum is 0.214 cal/g.°C. Determine the energy, in calories, necessary to…

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Q: a serving of Doritos contains 150 total calories of which 70. Calories come from fats in the chips.…

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Q: 4. a. One liquid has a temperature of 140°F and another liquid has a temperature of 60°C. Are the…

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Q: A chunk of brass is initially at 25°C. The brass absorbs 75 J of heat and the temperature increases…

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Q: When you add water to a small amount of sodium chloride (NaCl), the solid dissolves and the solutiom…

A: When you add water to a small amount of sodium chloride (Nacl) , the solid dissolves and the…

Q: 10. Calorimeter is an instrument used to measure the change in mass of any physical or chemical…

A: The device which is used to measure the amount of heat in a physical or chemical process is known as…

Q: Convert the following numbers of calories or kilocalories into joules and kilojoules (Remember: kilo…

A: a) 75.2 kCal  = 1 kcal= 4.2 kJ So, 75.2kcal in kJ is, =75.2kcal × 4.2kJ1kcal=315.84 kJ       b) 75.2…

Q: Calculate the amount of heat needed to raise the temperature of 10g of aluminum from 100°C to 115°C.…

A: Given, Mass of aluminium (Al) = 10g. Initial temperature (Ti) = 100 degree Celsius. Final…

Q: The specific heat of aluminum is 0.214 cal/g.°C. Determine the energy, in calories, necessary to…

A: 1.) To calculate heat, we use the formula : q = m × C × dT  Where , m = mass  C =Specific heat…