Why is water used in automobiles as a coolant? a) It is not toxic for the environment b) It has a high specific heat capacity c) It has a high lubricating property which in turn keeps the engine cool by reducing friction d) It is available in abundance

Q: what is a drawback of solar energy production? * O it isnt renewable it is expensive to set-up it…

A: Step1: Overview of Solar Energy. Solar energy is the radiation from the sun, capable of producing…

Q: Which of the following is the best thermal insulator? Select one: a. air b. water c. stainless steel…

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Q: Constant-volume bomb calorimeter is an of a/an a. shut system b. closed system c. isolated system…

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Q: In order to cool your freshly-baked brownies, which is the faster method and why? The air temper-…

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Q: which of the followig always accompanies the formation of water from ice ? A. an absorpation of…

A: The amount of thermal energy required for the formation of water from ice is called as latent heat…

Q: *Boiling Point of Water What is the temperature at which water boils when it is at one atmospheric…

A: The boiling point of a liquid is the temperature at which the vapour pressure of a liquid equals the…

Q: An ideal gas cannot be: A) liquified B) solidified C) Both A & B D) None of the above

A: An ideal gas is defined as the gases which have elastic collisions between their molecules and there…

Q: Select the correct statement for melting of any substance. a) It occurs at the same temperature as…

A: To find: the correct statement for melting of any substance.

Q: Which phase change is an example of an exothermic process?   A) Liquid to Solid B) Gas to Solid C)…

A: The exothermic process is the process in which the heat is released when the reaction is carried…

Q: What is meant by mean free path? a) It is the average distance a molecule travels without colliding…

A: A

Q: An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 465-g sample of…

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Q: Whi ch of the following laws state that "at constant temperature, the volume of a given mass of a…

A: Boyle's-Mariotte law : When the temperature is unchanged, a certain amount of particular gases…

Q: What happens to the boiling point of water in a container when the container is completely closed by…

A: To find: Effect of of water in a container when the container is completely closed by a lid on…

Q: Which of the following is a bad conductor of heat?   A) Wood  B) Diamond C) Water  D) Mica

A: Materials that conduct heat efficiently are called good conductors of heat and those which fail to…

Q: The average kinetic energy of the particles in a substance is  a) Increased as the temperature of…

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Q: Use the Kinetic Theory of Matter to explain   Humans perspire in order to cool their  bodies when…

A: We have to explain humans perspire in order to cool their  bodies when exercising in hot weather…

Q: The volume increase of ethanol when its temperature is increased by 30 ° C is 0.60L. Determine the…

A: Given : Let volume of ethanol initially be V1 = V ANd temperature be T1 = T Final volume, V2 = 0.60…

Q: How much heat is required to melt a 3-kg iron? A.272,000 J B.300,000 J C.816,300 J

A: Given: Mass of iron, m = 3 kg.   To Find: The amount of heat required for melting.

Q: What is the purpose of stirring the contents of the calorimeter before the final temperature is…

A: (1) Before stirring the contents, it has  temprature gradient which shows variation in temprature…

Q: Part A: In this process, the systems undergo which of following changes? A. Phase changes only B.…

A: Tteai=75° C   amount=1.5 Lice added=0.975 kgTice=0°CFinal temperature= TfApplying the energy…

Q: The latent heat of evaporation is the amount of energy required to convert one gram of a substance:…

A: Latent heat of evaporation It is also known as the physical properties of the matter. It applies to…

Q: Select all that is true about heat.   A. Heat capacity is an intensive property because it depends…

A: Specific heat capacity is defined as amount of heat required to raise the temperature of an object…

Q: Explain changes of state of water from ice to steam relates to the Kinetic Theory of matter.

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A: Solution:-Step 1: Step 2: Step 3: Step 4:

Q: To freeze water into ice you must: Select one: a. Put calories of heat energy into the water b. Take…

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Q: Which metal is the best conductor of heat? A) Silver B) Gold C) Copper D) All of the above

A: All conductors are best conductors of heat and electricity. Hence all of the above mentioned metals…

Q: In gas loaded accumulators, the storage of potential energy is due to a. Density of gases b. None of…

A: The answer is given below

Q: The absolute zero is the temperature, at which? a) All substances exist in a solid state b) Water…

A: C

Q: How many liters of water at 90°C should be mixed with 63 liters of water at 10°C to have a mixture…

A: The heat in term of temperature is defined as, Q=mc∆T where m is the amount of substance, c is the…

Q: During a heating process, the temperature of a system rises by 10°C. this rise. *.?in temperature in…

A: Given the temperature in °C which is Celsius to convert into Fahrenheit    °C to °F°F = x °C x 95 +…

Q: methyl alcohol known to be toxic with a suitable device An experimental design was made about how…

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Q: SOLUTION IS NEEDED How much calories of heat are needed to convert 500 grams of water at 30°C to…

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Q: Determine how many standard donuts a 70 kg person should eat after playing basketball for 2 h to…

A: Given: One donut energy = 280kcal Metabolic rates : Basketball  = 688kcal/hr Sitting = 103kcal/hr

Q: For a cooling process with 100% efficiency, the process goes on until it reaches a temperature known…

A: Wet bulb is the lowest temperature to which air can be cooled by the evaporation of water into the…

Q: How much heat is necessary to change 100g of ice at -20°C into water at 10°C? a) 2 Kcal b) 0.2 Kcal…

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Q: Atoms are to molecules as: A. Chimneys are to roofs B. Windows are to doors C. Keys are to…

A: The question presents an analogy and asks us to determine the relationship that is analogous to…

Q: Q1: Diffusion Temperature-Time Heat Treatment Specification The wear resistance of a steel gear is…

A: Using the Gaussian expression,  Cx-CoCs-Co=1-erfx2Dt Here, Cx is concentration at x depth Co is…

Q: Dehumidification is a process which involves .. water vapor per Kilogram of dry air Select one: a.…

A: Dehumidification process: Dehumidification is the process in which the humidity or moisture or water…