8. At sea level, water boils at a. 100 °CY b. Lower than 100 °C С. Higher than 100 °C

Q: Name the phase change in each of these events:(a) Dew appears on a lawn in the morning.(b) Icicles…

A: SOLUTION: Step 1: a.) Water vapor (a gas) changes into liquid water, seen as dew. Condensation is…

Q: Draw a phase diagram for water. Label the axes, the states of matter, the triple point and the…

A: Phase diagram of water is given by,

Q: What property of water explains why our body temperature remains essentially constant?  a. Water has…

A: 1. What property of water explains why our body temperature remains essentially constant?  Answer…

Q: How much heat is needed to boil 785 g of water that is at 17.6 ºC?

A: To find out the total heat required for boiling the 785g water at 17.6-degree centi.... following…

Q: VII. Identify the property of water that explains why: 1. Humans can maintain their body…

A: Solution: Properties of water- The water is universal solvents. All types of organic compounds are…

Q: Two 20.0 g ice cubes at −15.0 ∘C−15.0 ∘C are placed into 295 g295 g of water at 25.0 ∘C.25.0 ∘C.…

A: Given : Mass of ice cube = 20.0 g Number of ice cubes = 2  Initial temperature of ice = -15.0 oC…

Q: Diagram the heating curve for water. Assume that the H2O is a solid at a temperature of -30oC and is…

A: For drawing the heating curve of water, the temperature is plotted at the y-axis and heat absorbed…

Q: Why does water vapor at 100°C cause a more severe burn than liquid water at 100°C?

A: When water boils, it is partly converted to steam and the steam and liquid phase exist in…

Q: At the top of Mount Everest, water boils at 70  C. Explain.

A: Boiling point is temperature at which vapour pressure of liquid become equal to atmospheric pressure…

Q: d 10 The processes of melting and evaporation involve changes in the of a substance.

A: Melting is the change to solid to liquid at its melting point.  Evaporation is the change of liquid…

Q: в

A: What is the correct order of boiling point = ? Given amines are : a). D > C > B > A…

Q: Water exhibits a unique property of surface tension. What happens among the water molecules to cause…

A: Given that water exhibits a unique property of surface tension. We have to find the reason behind…

Q: Why does it take more energy to boil 10 g of liquidwater than to melt an equivalent mass of ice?

A: Melting is defined as the process where a solid changes into liquid when heated to its melting…

Q: How many joules of energy must be removed from 172 g of water at 27.1 °C to form ice at 0 °C?

A: Specific heat of substances.

Q: 13. How much heat is absorbed if 45 grams of sweat is evaporated from someone's skin? AHvap for…

A: Given,  The heat is absorbed for evaporation of 45 grams of sweat from skin is: The DHvap = 2.41…

Q: The boiling point of water at sea level is 100 °C. At higher altitudes, the boiling point of water…

A: Boiling point is the temperature at which the vapour pressure of liquid become equal to atmospheric…

Q: A new linear temperature scale, degrees Zunzol (Z), is based on the freezing point and boiling point…

A: Given, Freezing point of zunzol =141.5°C Boiling point of zunzol =-24.8°C Let the freezing point on…

Q: 4. Water is less dense as a solid than as a liquid. A. Why can solid ice float on liquid water? B.…

A: Answer A- When water freezes into its stable form, the molecules can form extra strong hydrogen…

Q: Calculate the final temperature of a mixture of 140.0  g of ice initially at -25.00 °C and 299.0  g…

A: Heat lost by water = Heat gained by ice  Specific heat capacity of water = 4.18 J/goC Specific heat…

Q: How many joules of energy must be removed from 175 g of water at 22.2 °C to form ice at 0 °C?

A: Mass of water = 175 g  Initial temperature = 22.2 °C  Final temperature = 0°C  The amount of energy…

Q: How many joules of energy are absorbed when 36.2 grams of water is evaporated?  ΔHfus = 6.01 kJ/mol…

A: Heat of vapourization is define as the amount of energy is needed to boil I mole of substance at…

Q: 4. Container A has 30 grams of water at 85 deg. C. Container B has 25 grams of water at 25 deg C.…

A: Colder water will warm and warmer water will cool down.  The whole mixture contain same temperature.…

Q: 6. Heat that causes change in temperature without a change in phase. 7. Heat that causes change in…

A: 6. Heat that causes change in temperature without a change in phase is known as Sensible heat In…

Q: turning into vapor at its boiling point100°C) associated with 85 g of water

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Using this heating curve, complete the following statements: freezing point between points | Select…

A: There are three phases of matter. The phase of matter can be interchanged by changing the…

Q: Examine the heating curve for water? Explain the significance of the slopes of each of the three…

A: The heating curve for water can be represented as follows

Q: The graph below represents the heating curve of a substance that starts as a solid below its…

A:

Q: How many joules of energy must be removed from 131 g of water at 14.5 °C to form ice at 0 °C? How…

A:

Q: How much heat is needed to melt 10.0 grams of ice at -10°C until it is water at 10°C?

A: Given, mass of ice = 10.0 g Initial temperature (Ti) = -10°C Final temperature (Tf) = 10°C Amount of…

Q: How many grams of ice are needed to decrease the temperature of 50.0 mL of water by 5.0 degrees…

A: The solution is given below -

Q: 173.1 grams of water is cooled from 51.0°C to -37.4° C. What is the heat change (in Joules)?…

A: H2O (l), 51.0°C →q1 H2O(l), 0°C →q2H2O(s), 0°C →q3 H2O(s), -37.4° C The heat change for the…

Q: Use the observation in the first column to answer the question in the second column. observation…

A: Given the enthalpy of vaporization of substance C is higher than that of substance D.  Given…

Q: 5. Is the melting temperature of a substance different from its freezing temperature? Define the…

A: The melting point of a substance is same as that of its freezing point. At this particular…

Q: The phase diagram shows the relationship among which variables? A. Pressure, volume, and three…

A: The phase diagram is the representation of the physical states of a substance in graph form under…

Q: B. Covalent solids 4. What happens to water molecules when cooled? D. Amorphous Solids A. The water…

A: Since you have posted multiple questions per guidelines we can answer one per session . If you want…

Q: How much ice in grams would have to melt to lower the temperature of 342 mLmL of water from 35 ∘C∘C…

A: Density of water = 1 g/ml Volume of water = 342 ml Mass of water = Density of water × Volume of…

Q: How much heat is released when 25.0 grams of water at 25.8 degrees C changes to ice at -14.5 degrees…

A: We determine the heat evolved in a temperature change by the formula= ∆H = m x s x ∆T where m is…

Q: How much ice in grams would have to melt to lower the temperature of 55.8 g of water from 55°C to…

A: Given mass of water =55.8 g Density of water = 1.0 g/ml

Q: How many joules of energy must be removed from 152 g of water at 18.5 °C to form ice at 0 °C?

A:

Q: how many kcal of heat are released when freezing 5.00 kg of water at 70.0 degrees celsius to ice at…

A: Given: Mass of water = 5.00 Kg = 5000 g. Initial temperature of water = 70.0 oC And final…

Q: 7. 750 mL of N2 was collected over H20 at 25°C at a total pressure of 1695 mm Hg. What is the…

A: According to Dalton’s Law, the total pressure exerted is equal to sum of partial pressure of…

Q: 5. Using a phase diagram, explain why the sublimation of ice is not possible at room temperature.

A:

Q: Water in a well boils at 75°C at a certain depth in water. At what temperature in °C the water will…

A: We know that, Enthalpy of vaporisation of water = 40.5 kJ/mol Water boils at 75°C ( at some pressure…

Q: The graph below represents the heating curve of a substance that starts as a solid below its…

A: The question is based on the concept of heating curve. we have been given a heating curve in which…

Q: How much energy must be supplied to convert 125g of ice at 0 degrees celcius to 125g of water at 91…

A: We will be using two types of heat in the whole process:   Q1  = Heat required to convert the ice at…

Q: Two 20.0 g ice cubes at −12.0 ∘C−12.0⁢ ∘C are placed into 275 g275 g of water at 25.0 ∘C.25.0⁢ ∘C.…

A:

Q: Use the diagram to anwer the questions below. 1 atm B A D 0.006 atm - 25 0.01 25 100 T Match the…

A: In any phase diagram, 1) The region between the y axis and curve is the solid phase region 2) The…