If you touch the sides of a beaker containing NaOH being dissolved, will it feel warm or cold to touch? Explain. One of the components in commercially available ice packs is ammonium nitrate. Explain how ammonium nitrate is an effective material for ice packs.

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: 2. Write down the chemical reaction for the heating of the hydrated form of copper II sulfate. The…

A: Mass of hydrated copper sulphate = 4.1g  Mass of anhydrated copper sulphate = 2.6g  Mass of water =…

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: What volume of ethanol in milliliters (density = 0.7893 g/cm3) should be added to 427 mL of water in…

A: dddxxx The amount of substance dissolve in a given volume of solution is called density of the…

Q: Explain why the curve has two segments in which heat is added to the water but the temperature does…

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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: The heat of solution of ammonium nitrate is 26.2 kJ/mol. When ammonium nitrate solid is dissolved in…

A: Endothermic reaction: The reaction in which heat energy is absorbed by the system from the…

Q: A student is performing a lab to determine whether a particular white solid undergoes an endothermic…

A: When energy is released in an exothermic reaction, the temperature of the reaction mixture…

Q: A girl bought a pet fish. Upon returning home, she put it in a bowl of recently boiled water that…

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Q: Solid ammonium chloride is added to water in beaker and dissolves. The beaker becomes cold to the…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: A solution is made by mixing 285.0 mL285.0 mL of ethanol initially at 12.0 ∘C12.0 ∘C with 285.0…

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Q: Using the molar heat of solution provided in the question above: determine how many g solid sodium…

A: The molar heat of the solution of sodium hydroxide is = -445.1 kJ/mol The volume of the water is =…

Q: A solution is made by mixing 212.0 mL of ethanol initially at 10.0 C with 212.0 mL of water…

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Q: List the Enthalpy changes accompanying the solution process?

A: ANSWERE IS DISCUSSED BELOW :

Q: When we heat the cheetos was all the heat released actually captured by the water?

A: In cheetos experiment, a chip is burnt and heat released by it is used to raise the temperature of…

Q: Suppose you want to purchase a syrup containing water and sugar and you have two brands from which…

A: Freezing point, temperature at which a liquid becomes a solid. As with the melting point, increased…

Q: 3. Which of the following substances would you expect to have the biggest effect on the freezing…

A: The temperature at which liquid phase of solution is converted into solid phase is known as freezing…

Q: Ice cubes from a freezer have a temperature of about -12°C (10°F), which is cold enough, but contact…

A: Det Tf=i ×Kf×m ion ,i for Nacl-->Na+ +Cl- i=2

Q: A 19.7724 grams of metal was heated to 100.001∘C  when the metal was placed into 155.00 grams of…

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Q: how many grams of table salt must be added to half a liter of water to raise its boiling point by 15…

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Q: 1) If a student wants to make 225.0 mL of a 17.65M stock solution of ZnCl 2, how many grams of…

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Q: Calculate the boiling point of a 3.60 m aqueous sucrose solution. Express your answer in degrees…

A: The boking point of the solution can be determined by calculating it's molarity .

Q: substance has a solubility of 12.5 g per 100 mL of solvent at 100 degrees celsius and 2.45 g per 100…

A: Given : solubility of substance at 100 °C = 12.5 g/100 ml  Solubility of substance at 10°C = 2.45…

Q: 1. Which of the following accurately describes the conditions of an isolated system? a. Both energy…

A: The reaction is which heat is added is called as endothermic reaction.  The reaction in which heat…

Q: Calculate the quantity of heat (in calories) needed to change 50 g of 0 deg C ice into steam at 100…

A: It includes the scenario:-  50g ice at 0°C ----> 50 g water at 0°C ----> 50 g water at 100°C…

Q: 1. Which of the following accurately describes the conditions of an open system? a. Both energy and…

A: There are three types of systems  open system close system isolated system

Q: A 25.0 g sample of molten iron releases 1230 cal as it cools from 2000 °C to its freezing point,…

A: Iron at 20000C is in its molten state.

Q: small.unt of sodium chloride (NaCl) is dissolved in a large amount of water. Imagine separating this…

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Q: Is there a difference between the melting point and the freezing point of a pure substance in a…

A: Melting point is the temperature at which a solid substance gets converted into its liquid state at…

Q: When iron(III) nitrate dissolves in water, what ion is attracted to the oxygen atom of the water…

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Q: how many calories are required to raise the temperature of 255g of water from 42c to 75c?

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Q: How many grams of water can be heated from 16.0 °C to 95 °C using 125 kJ?

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: An antifreeze solution freeze at -100°C. What is the freezing point on the Fahrenheit scale? A)…

A: Step →1Relation between °C and °F :-°F = 95 x °C + 32

Q: Blue CuSO4·5H2O crystals release their water of hydration when heated. How many phases and…

A: On heating the blue solid, hydrated copper(II) sulphate, CuSO4·5H2O, white solid of anhydrous…

Q: A solution is made by mixing 287.0 mL287.0 mL of ethanol initially at 13.1 ∘C13.1⁢ ∘C with 287.0…

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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: )Which of the following cannot leave or enter a closed system: heat, work, or matter? Which cannot…

A: The system consists of those molecules which are reacting.The surroundings are everything else; the…

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: As the temperature goes up, solids and gasses dissolve more easily into liquids.  True or False

A: True

Q: Compare the enthalpy of a solid becoming part of a liquid solution and the enthalpy of gas becoming…

A: Enthalpies of different processes is to be compared.

Q: Four liquids are described in the table below. Use the second column of the table to explain the…

A: Given solution  2.7 g of glucose in 500mL of water 2.7 g of ethylene glycol dissolved in 500mL…

Q: How many grams of sugar (C12H22O11) must dissolve in 10.0kg of water in order to melt the ice on a…

A: Ice melt at 0°C but if you want to melt the ice at -18°C. Then must be depression of freezing point.…

Q: A student is trying to freeze a solution of urea in the lab where the temperature is around 22°C.…

A: Depression in freezing point of solution = i ×Kf ×m Where Kf = molal freezing point depression…

Q: ind the boiling point of a solution that is made from mixing 6.50 g of vanilin (MW= 153 g/mol) in…

A: Solution is made up of two components which are solute and solvent. Solute is present in the minor…

Q: The temperature of 328.6 mL of Ne is changed from 274.49°C to 14.27K. What is the new volume of the…

A: Given,V1=328.6mL           T1=274.49°C+273.15=547.64KV2=?                         T2=14.27KWe have…

Q: enthalpy

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Q: At what temperature does water freeze in kelvin? 100 K O 273 K O OK

A: Freezing Point of Water: The freezing point of any substance describes the point for the liquid to…

Q: 1. What error occurred by using (a) a single large piece of ice? Or (b) very fine shavings of ice?…

A: A). Using a single piece of ice As rate of heat absorption is directly proportional to the surface…

Q: enriched to a 60 wt % sulfuric acid solution by adding pure sulfuric acid. a. How much pure sulfuric…

A: Given  20 wt% of sulfuric acid is enriched to 60 wt% by adding pure sulfuric acid. The temperature…