Determine the energy required to freeze 12.0 kg of water at 70.6 ° C. * Express your answer in MJ.

Q: A student is investigating the boiling and freezing point of a liquid, He observes

A: According to the question -   Given -   1) Upon attaining the boiling point, the liquid Begins to…

Q: A 28.9-g sample of water at 290. K is mixed with 48.3 g water at 350. K. Calculate the final…

A: If we assume that no heat is lost to the surroundings, then you can say that the heat lost by the…

Q: A 2.0 kg block of aluminum (specific heat capacity = 0.897 J · g¯.°C¯1)at 935 °C is dropped into 1.5…

A: When two substances at different temperatures come in contact, there will be a heat transfer from…

Q: Q2. What is the total amount of calories needed to 1) heat 200.00 gf water from 21.5 °C to its…

A: Boiling point of water is 373 k or 100 degree celcius In first part we calculate the heat needed for…

Q: The heat capacity of liquid ethanol is 2.45 J/g-deg C. How much heat do you need to add to 100 g of…

A: Given: Specific heat capacity of ethanol = 2.45 J/g⋅ oC Mass of ethanol = 100.0 g Initial…

Q: 5.0 g of cream at 23.3 °C are added to an insulated cup containing 150.0 g of coffee at 84.7 °C.…

A: Given: Mass of cream= 5.0 g The temperature of cream = 23.3°CMass of coffee=150.0 g The temperature…

Q: ow much energy is required to boil 551.8 g of methanol at its boiling point of 64.7 °C?

A: The energy required to boil a substance, also known as the enthalpy of vaporization, can be…

Q: The group wanted their water cooled when they took the water out from the thermos flask. They…

A: We may apply the idea of energy conservation to determine the equilibrium temperature. The heat that…

Q: Temperature

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Q: What amount of heat energy is needed to warm 4.00 grams of H2O (ℓ) by 25°C?

A: Specific heat is the amount of heat energy required to raise the temperature of substance by 1°C ,…

Q: Four ice cubes at exactly 0°C with a total mass of 51.0 g are combined with 120 g of water at 85 °C…

A: Here we are required to find the final temperature when 4 ice cubes is combined with 120 gm of…

Q: A 25.0 g sample of benzene at 19.9 °C was cooled to its melting point (5.5 °C). How much heat was…

A: Introduction: Specific heat capacity:                                It is the amount of heat energy…

Q: Suggest a reason why the heat required to vaporize 102 g of water is so much higher than the heat…

A: Given information: Mass of water = 102 g Temperature change = 75 ℃

Q: 5. Assume that the particles in table salt (NaCl) vibrate just as forcefully as the particles in…

A: The reason for this difference in behavior is related to the strength of the bonds between the atoms…

Q: What is the minimum amount of energy required to heat 145 grams of water to the boiling point of…

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Q: 4) What is the total enthalpy change ( in kJ) during the process in which 36.1 g of ice at -17.3 °C…

A: We need to convert 36.1 g of ice at -17.3 .C  to 36.1 g of water at 0 .C .   Total change in…

Q: Water, with mass of 339.83 grams at 26.45 degrees celsius, is heated at constant pressure. The water…

A: Given: Mass of water = 339.83 g Initial temperature = 26.45 °C        Or initial temperature =…

Q: Calculate the energy (in kJ) required to heat 0.491 grams of water from -46.0 ℃ to 142.5 ℃.

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Q: At 1.00 atm, how much energy is required to hear 71.0 g H20 (s) at -22.0degrees C to H20 (g) at…

A: 1.)  To calculate the energy required to heat water , we would consider five steps .  a.) As water…

Q: Calculate the total heat in kJ required to raise the temperature of 25.0 g of solid ethanol at…

A:

Q: 5.0 g of cream at 10.1 °C are added to an insulated cup containing 100.0 g of coffee at 83.3 °C.…

A:

Q: How much heat is required to change 216.2g of ice at 0 degrees C to water 0 degrees C?

A: We have to find how much heat is required to change 216.2g of ice at 0 degrees C to water 0 degrees…

Q: 11.0 g of cream at 16.1 °C are added to an insulated cup containing 100.0 g of coffee at 85.3 °C.…

A: Equilibrium temperature of coffee is approx 78.4 °C

Q: standard enthalpy of the reaction for the hydrogenation of etl - CH3CH3 (g) . pl B.) -136.94 kJ/mol…

A: 11)  Given,  □Hf(CH3CH3) = -84.68 kJ/mol □Hf(CH2CH2) = 52.26 kJ/mol □Hrxn = = [□Hf(CH3CH3)] -…

Q: 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The…

A: Given moles (n) = 3.15 volume = 150 ml Temperature difference = 20.11°C specific heat (C) = 4.184…

Q: The enthalpy of fusion of H₂0 is 6.01 kJ/mol. How much energy is given off when 4.68 mol of H₂O is…

A: Given - Enthalpy of fusion = 6.01 KJ/mol 4.68mol of H2O is frozen .

Q: enthalpy of fusion (melting) of ice is +6.01 kJ/mol at 0.00°C. What is the energy change when 49.0 g…

A: Given, Mass of ice = 49.0 g Molar mass of Ice = 18 g Moles of ice =mass/molar mass      = 49.0/18 =…

Q: At higher elevations, the boiling point of water is lower because the atmospheric pressure is lower.…

A: Specific heat capacity of water = 4.2 j/gc

Q: How much heat (kJ) is absorbed by 948.0 g of water in order for the temperature to increase from…

A:

Q: energy is required

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Q: A 30.1-g sample of water at 300. K is mixed with 51.3 g water at 340. K. Calculate the final…

A: In the above it is given that , no heat is loss to the surrounding . Means heat lost by hot water…

Q: how many joules of heat are required to heat 25.0 g of ethyl alcohol from the prevailing room…

A: Given, mass of ethyl alcohol is 25.0g, initial temperature is 22.50C, final temperature is 78.50C.…

Q: In their Memoir on Heat, published in 1783, Lavoisier andLaplace reported, “The heat necessary to…

A: Given, The specific heat capacity of water is  4.18 J. Initial temperature 0°C. The final…

Q: Calculate the amount of heat required to raise the tempature of an 91 g sample of water from 39C to…

A: Given: Specific heat of water = 4.18 J/g⋅∘C. Mass of water = 91 g. Initial temperature (T1) = 39 ∘C…

Q: how much heat is released when a 27.7g sample of ethylene glycol at 42.76 is cooled to 32.5 c?

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Q: The specific heat of mercury is 0.140 J/g°C. Calculate the heat necessary to raise the temperature…

A:

Q: Based on the thermodynamic properties provided for water, determine the energy change when the…

A:

Q: 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The…

A: To calculate the mass of solution  q = ∆H = mC∆T q = ∆H = heat = ? m = mass = 150.0 ml x 1.20 g/ml =…

Q: A 25.4-g sample of water at 290. K is mixed with 47.3 g water at 350. K. Calculate the final…

A: Let final temperature be T, the heat gained or heat absorbed by 25.4 g of water (q1) is determined…

Q: 90.0 g of water at 15.0 ∘C

A:

Q: 2Na(s) + 2H₂O(1)→ 2NaOH(aq) + H₂(g) AH = -368 kJ Assuming no heat loss to the surroundings, will the…

A: Introduction :  Enthalpy of fusion can be defined as the change in enthalpy of a substance when a…

Q: Calculate the heat change in kilojoules for freezing 90.0 g of water at 0 degrees Celsius.

A: we have to calculate the heat change for freezing 90.0g water at 0oC

Q: Calculate the energy (in kJ) required to heat 0.491 grams of water from -46.0 °C to 142.5 °C.…

A:

Q: Calculate the amount of heat (in joules) required to heat 43 grams of water from 28°C to the…

A: Given, mass of water = 43 g Initial temperature (Ti) = 28°C Final temperature (Tf) = 100°C Amount of…

Q: Calculate the energy (in kJ) required to heat 0.367 grams of water from -47.6 °C to 107.9 °C.…

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Q: Chemistry Using a data below, calculate the molar heat of vaporization of an unknown substance (in…

A: Given the linear regression equation is,  Y = -3125.3*X + 13.248, and R2 = 0.9375

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.