Part P How many calories of heat are absorbed when 250 grams of water at 100°C vaporize to form gaseous water at 100°C? 1.4 x 102 calories 5.6 x 105 calories 5.6 x 102 calories 1.4 x 105 calories

Q: Convert the heat of neutralization of acetic acid from -52.2 kj/mmol to calories per %3D millimole…

A: The heat of neutralization of acetic acid  = - 52.2 KJ /mmol We know ; 1 Kilo Joules  = 1000 Joules…

Q: How many kilograms of ethyl alcohol at a temperature of 78.5°C can be boiled when 522 kcal of heat…

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Q: If an 4.7 g piece of water ice at -15C has 582 calories (enough to liquify it) added to it what…

A: Consider the given information is as follows; Mass of water ice = 4.7 g Amount of heat (Q) = 528…

Q: How much energy is absorbed or released when 23 g of carbon dioxide (Hfus =8.647 kJ/mol, Hvap =…

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Q: a sample of octane is burned in a bomb calorimeter containing 1.00 x 10^2 g H2O. If the water temp…

A: The amount of heat absorbed (or released) by fixed amount of a substance to change its temperature…

Q: How much heat is lost when 789g of acetic acid is cooled from 82.7°C to 25°C. The specific heat of…

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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: What mass of water will give up 240 calories when the temperature drops from 100 deg C to 68 deg C.…

A: Given:: Heat q= -240 cal T1=100 ℃  T2=68℃  Specific heat capacity of water, Cp= 1 cal g-1℃-1 mass of…

Q: Sodium acetate dissolves readily in water according to the following equation. NaC2H3O2 (s) →>…

A: The heat of a reaction or enthalpy of a reaction is the enthalpy change, which takes place at…

Q: List the following elements in order from lowest boiling point to highest lowest boiling point…

A: Boiling point of substance depends upon the primary forces as well as secondary forces present in…

Q: 774.0 kJ of energy are used to melt silly putty. How many grams of silly putty were melted? AHfus =…

A: Given:  Heat used to melt silly putty, ∆H = 774.0 kJheat of fusion, ∆Hfus = 21.39 kJ/g

Q: Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3…

A: Often while calculating, there is a need to convert units from one system to another system. The…

Q: 3. Is solid → liquid → gas an endothermic or exothermic process? Describe how this energy change…

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Q: how many calories (cal) are equivalent to 7.25 kJ? (1 cal = 4.184 J )

A: Recall the relation between calorie and joule        1 cal=4.184 J We have to find the equivalents…

Q: Is heaven exothermic or endothermic? Is hell exothermic or endothermic?

A: Given We know about the  exothermic or endothermic

Q: 3. Calcium chloride is an ice-melting compound used for sidewalks and streets. Explain in scientific…

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Q: What would be the final temperature if 500 J of heat were transferred into 20. 0 g of Methanol…

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Q: Given the following information, calculate the energy (in kcal) required to convert one ice cube…

A: Given: Volume of water used = 36.0 mL. Initial temperature of ice = -18.0 oC And final temperature…

Q: how many calories are required to heat 93.6 g of menthol from -35C to 55C specific heat of…

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Q: The nutritional Calorie is equal to 10 calories.

A: Calorie: Energy is expressed in units of calorie. For the survive on the earth, human body requires…

Q: Calculate the number of calories released when 32.0 g of water cools from 95.0 C to 20.0 C. The…

A: Since the heat of the process is given by  Q = mCΔT  where Q = heat involved  m = mass = 32 g C =…

Q: How many calories are required to increase the temperature of 13 g of alcohol from 11 °C to 23 °C?…

A: Heat is required to change the temperature of alcohol from 11 oC to 23 oC.with,Heat = q caloriesmass…

Q: How many calories (cal) are needed to warm 25 g of water from 65 ̊C to 92 ̊C. specific heat of water…

A: Heat capacity of water is 1.00 cal/g˚C Heat required to convert 25 g of water from 65˚C to 92˚C can…

Q: A solid is dissolved in a coffee cup calorimeter. Which of the observations suggest that the process…

A: The given process is endothermic as solid is dissolved in a coffee cup calorimeter.

Q: Given the following information, calculate the energy (in kcal) required to convert one ic cube that…

A: Mass of ice = 36 g Initial temperature = -18oC Final temperature = 37oC Number of moles of ice = 36g…

Q: Q5. Calculate the amount of heat (kcal) released when 50.0 g of water at 100°C hits the skin and…

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Q: convert 123 J to calories 515 cal 34.2 cal 443 cal 29.4 cal

A: Given  123 J

Q: 3. What temperature change in degrees Celsius is produced when 800.0 calories are absorbed by 10.0…

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Q: Convert 15.00 kJ to calories (cal). 15.00 kJ = Convert 203 kcal to kilojoules (kJ). 203 kcal

A: Given here energy in unit of kJ and kcal and we are asked to convert themin cal and kJ the energies…

Q: Water changes from a liquid to a gas when heated to its boiling point because:Immersion Reader A)…

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Q: The following information is given for ethanol at 1 atm: Boiling point = 78.40°C Heat of…

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Q: Calculate the energy change (with the correct sign) when the temperature of 100.0 ml of liquid water…

A: Density of water is 1.00 g/mL Mass of solution is calculated as follows,

Q: Potassium nitrate, KNO3KNO3, has a molar mass of 101.1101.1 g/mol. In a constant-pressure…

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Q: At which portion(s) on the graph below is the average kinetic energy of the water molecules…

A: from graph Avg Kinetic energy of the Water Molecules become constant on position g and k So option…

Q: Sample 1 Food coloring dye spreads slowly in a sample of water Sample 2 Food coloring dye spreads…

A: Rate of diffusion of dye in water is directly proportional to temperature. Higher the temperature,…

Q: priya bought a solid chocolate bar and left it in her pocket.  Whe she took it out the chocolate was…

A: The change in physical state of substance takes place when temperature present around it is altered.…

Q: ai yas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3…

A: Joule is the SI unit of work. Joule is defined as the amount of energy transferred to an object when…

Q: Running at a rate of 6 mi/h uses 704 Calories in an hour. Convert this value to (a) calories; (b)…

A: These conversions can be carried out by knowing that: 1 cal = 4.184 J 1 Kcal = 1000 cal 1 kJ = 1000…

Q: 1.09 kcal of energy is added to 45 grams of water at an initial temperature of 23.4°C. What is the…

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Q: The following information is given for ethanol at 1 atm: Boiling point = 78.40°C Melting point =…

A: Given, Mass of ethanol = 44.00 g Initial temperature = - 58.80 °C Final temperature = 94.90 °C…

Q: 6.70 J heat is added to 5.71 g sample of unknown metal and temperature of metal increases by 0.798…

A: We know the equation of specific heat formula is: Q = m c Δ T where Q= heat energy (J) m= mass of…

Q: 33. The amount of fat recommended for someone with a daily diet of 2000 Calories is 65 g. What…

A: The reactions releasing/evolving the heat towards the surrounding are considered as "exothermic…

Q: How many grams of solid glycerol could you melt by adding 7710 J of energy? Hfus(glycerol) = 200.6…

A: Given data; Heat energy needed to melt solid glycerol = 7710 J Hfus(glycerol) = 200.6 J/g

Q: How many calories are released as 50 g of  water cools from 100 °C to 25 °C? Specific heat of water…

A: We have initial temperature as 100°C final temperature as 25°C , specific heat as 1 cal/g°C, mass as…

Q: If 85.1 cal of heat are added to 10.0 g of water (specific heat = 4.184 J/g oC) at 30.0 oC, what is…

A: * Heat added = q = 85.1 cal (1 cal = 4.814 J ) q = 85.1 × 4.814 J = 409.67 J * Mass of water = m =…

Q: How much energy (in kJ) is released when 275 g of water (H2O) is formed according to the following…

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Q: A pint of premium ice cream can contain 1100 Calories. What mass of fat, in grams, must be produced…

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Q: Convert 157 calories to kilojoules

A: 157 calories needs to be converted into kilojoules.

Q: You have 500 g of dry ice at a temperature of 50 K. How much energy would it take to produce carbon…

A: Given: Mass of dry ice                            = 500 g,             Initial temperature        =…

Q: How many calories are required to change the temperture of 2.0 x 10^3 grams of H20 from 20C to 38C?…

A: This problem can be solved by using the formula :                                  q=mc∆Twhere q is…