How much energy (in J) is lost when a sample of iron with a mass of 26.9 g cools from 78.0 °C to 25.0 °C? Express your answer with the appropriate units, HẢ ? Value Units

Q: If 89 J of heat is added to a pure gold coin with a mass of 20 g. what is the temperature change?…

A: Given question of values = -gold coin mass =20gm . Represent of mass = m  -specific heat capacity of…

Q: When 762 joules of heat is added to a sample of solid copper (Cu), the temperature rises from 18.2…

A: We will use formula of heat

Q: heat in kJ

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 886.0 g sample…

A: The heat (q) absorbed or evolved can be calculated by the mass (m) of the compound, temperature…

Q: 86. When 2.8 J of heat are added to 5.6 g of an unknown metal, its temperature rises by 3.9 °C. Are…

A: The heat added to a system 'Q' to raise the temperature is determined using following formula: Q=m×…

Q: How many grams of copper can be cooled from 69.0 to 25.5 °C by the heat gained by 100.0 g of water…

A: Thermological equation isQ = m * c * Delta (T) where "m" is mass amount "c" is specific heat"Delta…

Q: A piece of iron (C=0.449 J/g°C) and a piece of gold (C=0.128 J/g°C) have identical masses. If the…

A: The heat of any temperature change process of metal is given by  Q = mCΔT where m = mass of metal  C…

Q: Where on the graph is Kinetic energy changing ? A. AB & DE B. EF & CD C. AB , CD, & EF D. BC & DE

A: Because, Kinetic energy(K.E.) is directly proportional to the square root of temperature(T). That…

Q: 1. If 200. grams of water is to be heated from 24.0°C to 100.0°C to make a cup of tea, how much heat…

A: Given that:                                             Mass of water = 200 g…

Q: A 1.08 kg sample of an unknown substance was heated up using 8,500 cal of energy from 46.0 °C to…

A:

Q: A 1.37 kg sample of an unknown substance was heated up using 8,011 cal of energy from 45.1 °C to…

A: We are given the sample of unknown  species  mass=1.37 kg=1370 gm Energy Q=8011 cal 1 cal =4.184…

Q: If 335 g of water at 65.5°C loses 9750 J of heat, what is the final temperatureof the water?

A: Given: The mass of water(m)=335 g Heat lost by water(Q)=-9750 J(heat released by the system is taken…

Q: An aluminum coin has a mass of 0.568g, a heat capacity of 0.903J/g°C and has gone from -12.5°C to…

A: First calculate the change in temperature ( ∆T ) :  ∆T = T2 - T1  ∆T = ( 33.0°C ) - ( -12.5°C )  ∆T…

Q: When 155 mL of water at 26°C is mixed with 75 mL of wa-ter at 85°C, what is the final…

A: The expression for the amount of heat transferred in the system is as follows,…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 590.0 g sample…

A:

Q: How much energy is needed to change the temperature of 39 g of water from 10.0 °C to 95.0 °C?

A: Since water remains in liquid form from 10°C to 95°C . Heat required, Q = mcp(l) ∆T ,where m is the…

Q: Water heat is of 4.18j?g c° what is the quantity of energy in kJ required to increse the temperature…

A:

Q: 14. A 10.0-g sample of water requires 418 J of energy to increase in temperature by 10°C, whereas a…

A: Given, 10.0 g of water requires 418 J of energy to increase  the temperature by 10°C, whereas the…

Q: The specific heat of a certain type of metal is 0.128 J/(g*c). What is the final tempature if 305J…

A:

Q: Chargers for cell phones get warm while they are being used. Some of the energy that they are using…

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Q: A chemist carelully experiment shows that 0.84 J of heat are needed. What can the chemist report for…

A: Solution - According to the question - Given - T1 = 14.7 °C T2 = 19.9 °C Heat needed = 0.84 J Mass…

Q: Calculate the energy, in joules, to heat a cube of gold with a volume in of 12.0cm^3 from 15 Celsius…

A:

Q: 3. Mixing 1.00 mL of 1.00M HNO, and 1.00 mL of 1.00 M KOH causes the temperature of the two at…

A: 3.

Q: How many joules of heat are required to heat 125 g aluminum from 19.0°C to 95.5°C?

A: Specific heat: It is defined as the heat required the raise the temperature of 1g of a substance by…

Q: 14. A 10.0-g sample of water requires 418 J of energy to increase in temperature by 10°C, whereas a…

A: Given: Qwater = 418 J Qcopper = 38.5 J Mass of water = mass of copper = 10 g ∆T = 100C

Q: heat in kJ

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Q: A 250.0 g sample of methanol is heated from 0 °C to 40 °C. How much heat (in kJ to two decimal…

A:

Q: Calculate the energy required to heat 486.0 mg of silver from -9.6 °C to -3.7 °C. Assume the…

A: Q = m . s . ∆T Where, Q = heat absorbed;  m = mass of metal, s = specific heat of metal and ∆T =…

Q: A 125g piece of metal is heated to 288celcius and dropped into 85.0 g of water at 12.0 Celsius. The…

A: Given,Mass of metal = 125 gTemperature = 288 oCMass of water = 85.0 gTemperature = 12 oCFinal…

Q: A metal radiator is made from 13.96 kg of iron. The specific heat of iron is 0.449 J/g °C. How much…

A: Given;

Q: A sample of sand at 21.5 degrees C absorbs 1.400E3 Joules of energy. The final temperature of the…

A: The relationship between heat and change in temperature is given by,

Q: A 55.0g sample of metal z requires 675j of energy to heat it from 25.0 to 118.0 Celsius? Calculate…

A:

Q: Calculate the initial temperature of a 7.29g sample of gold, C - 0.129 J/(g°C), if it releases…

A: The given data contains, mass = 7.29 g. heat capacity C = 0.129 J/g.°C heat Q = 51.69 J Final…

Q: When 156.0 mL of water at 26.0°C is mixed with 86.0 mL of water at 85.0°C, what is the final…

A: Convert the given mL of water into mass.Given, density of water = 1.00 g/mL

Q: How much heat must be absorbed by a 13.0 g sample of water to raise its temperature from 13.0°C to…

A:

Q: A 24.0 g sample of iron was heated from 0°C to 35.0°C. It absorbed 4087.4 J of energy as heat. What…

A: Consider the given equation as; Q = M C dT                          .......(1) Consider the given…

Q: 1. How much heat (in joules) must be used to raise the temperature of 185 g of water from 15 °C to…

A:

Q: How much energy does it take to heat 2.0 kg of water from 25.0 degrees C to 75.0 degrees C?

A: Given that,  Mass of water given m = 2.0 Kg = 2000 g Heat capacity of water c = 4.184 J/g°C Change…

Q: How much energy (in Joules) is required to raise the temperature of 10.0 g of H2O(l) by 10.0 oC?…

A: Heat required ,Q = mass×specific heat capacity×∆T Q = mc∆T     mass,m = 10 g c = 4.186 J/g-oC ∆T =…

Q: When 146.0 mL of water at 26.0°C is mixed with 41.0 mL of water at 85.0°C, what e fina temperature?…

A: given :-  Volume of water at 26.0°C = 146.0 mL  volume of water at 85.0°C = 41.0 mL  To calculate :-…

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

A: Given data,

Q: How much energy is required to heat 105.0 grams of the substance from 14.0 degrees * C to 73.0…

A: Heat energy required for the transition can be calculated using respective phase changes and…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 339.0 g sample…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 839.0 g sample…

A: The mass of the substance is = 839.0 g The raise in the temperature of the substance is = 8.9oC -…

Q: 1,922 Joules of heat are added to 42.5 grams of water, initially at 20∘C. What is the final…

A: The final temperature is given below

Q: How much heat energy is required to raise the temperature of 0.361 kg of copper from 23.0 °C to 60.0…

A: Given, Mass of copper = 0.361 kg Initial temperature = 23.0 ∘C Final temperature = 60.0 ∘C Specific…

Q: A total of 54.0 Joules of heat are observed as 58.3g of lead is heated from 12.0°C to 42.0°C. From…

A:

Q: When a mole of gaseous propane (C3H8) reacts completely with oxygen gas, 2044kj of energy is formed,…

A: One mole of gaseous propane reacts completely with oxygen forming CO2(g), H2O and release 2044 KJ of…

Q: A small piece of iron with a mass of 52.7 grams is heated from 20 degrees Celsius to 31.7 degrees…

A: Given, Mass of piece of iron (m) = 52.7 g Initial temperature (Ti) = 20°C Final temperature (Tf) =…

Q: An object that has a mass of 75 g is heated from 50°C to 93°C. If it takes 3000 J for the…

A: Given: Mass of object = 75 g Initial temperature = 50°C Final temperature = 93°C Heat required =…