The graph below represents the heating curve of a substance that starts as a solid below its freezing point. A) The graph below represents the heating curve of a substance that starts as a solid below its freezing point. B) What is the freezing point of the substance? 0C

Q: Given substances F2, Kr, Cl2 and HBr rank them with respect to the highest boiling point?

A: The boiling point is defined as the temperature at which a liquid's vapor pressure is equal to the…

Q: As a substance is subjected to pressure and/or temperature changes, it may undergo condensation,…

A: The following phases diagram can be explained as

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

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Q: How much energy is released when 75.3 g of water vapor at 115 degrees C condense and cool to liquid…

A: We know ,energy released HH = m×S× ( tf − ti ) Where H = heat m = mass in gramsS=Specific Heat…

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

A: Vapour pressure is the pressure exerted by the vapours of a liquid. It depends on the volatility of…

Q: Determine the amount of heat released when 497 g of Pb are cooled from 37.2 °C  to 22.5 °C   and the…

A: The given data contains, mass = 497 g. Initial temperature = 37.2°C Final temperature = 22.5°C…

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

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Q: ow do you account for the fact that solids and liquids generally expand when heated?

A: In general, the thermal treatment of solids and liquids results in the expansion of state.

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

A: We have to arrange given compounds According to their boiling and freezing point

Q: Assign the appropriate labels to the phase diagram shown below. 1 atm C B A 0.006 atm - 25 0.01 25…

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Q: Vhat is the final temperature, how much water is there, and how much ice is there if 824g of ce at…

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Q: How much heat (in joules) must be added to change 20.0g of H2O(s) at -10 degrees C to steam at 110…

A: Heat for changing the state of water from ice at – 10 C0 to 0 C0 can be determined as:Q1 = m s dT=…

Q: Calculate the energy required to change 30 g of ice at -27°C to steam at 130°C.

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

Q: 25 g15 ons d a -5 Energy |Temperaore °C

A:

Q: Is the boiling point of a liquid higher, lower, or the same at a higher altitude? Explain your…

A: Boiling point of liquid = the temperature at which vapor pressure of liquid become equal to…

Q: Which of the following explains that liquids cannot be compressed easily?   A. The particles are too…

A: Liquids cannot be compressed easily because compression always involves a reduction in volume. When…

Q: Understanding the connection between vapour pressure, boiling point, and enthalpy of vaporisation.

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Q: Using the image below, what phase change would occur moving from region C to region A? Moving from…

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

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

Q: Nitrogen is liquified from an air sample at -200oC. This is an example of what kind of process? a.…

A: Freezing is the process of conversion of liquid into solid. Sublimation is the process of conversion…

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

A:

Q: How much heat is required to vaporize 2.31 mol of methane, CH¼, at its boiling point? The heat of…

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

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: The melting point of dibromomethane is -53 °C and its ­boiling point is 97 °C. a) What is the state…

A: Answer the given questions from the given data. Given: The melting point of dibromomethane is -53 °C…

Q: 4. When a substance in its liquid state undergoes a decrease in kinetic energy a) it may melt the…

A: Given that the substance is in liquid state .

Q: Use the following to answer the next 2 questions I II III Compound HHH HHH HICIH HICICIĊ-Ċ-C-0-H 138…

A: Among the given three compounds, I, II, and III branching increases from I to III.

Q: How much energy is absorbed or released when 2.30 moles of water (4.184 J/g°C) cools from its normal…

A: Given: Moles of water = 2.30 moles. Specific heat capacity of water = 4.184 J/g C∘. We have to find…

Q: 11. Based on the heating graph shown in the figure for a substance, X, at constant pressure, Energy…

A: 11.a) Heat transfer     = mass × temperature change × specific heat  Or,  Q = m × T × S  Or,   T =…

Q: What property of a substance allows it to be separated from other solids using sublimation?

A: Introduction-

Q: Which of the following does NOT represent a step on the heating curve of water?

A:

Q: Which state(s) of matter are compressible? Which state(s) of matter are not compressible? Explain.

A: There are three states of matter 1. Solid State 2. Liquid State 3. Gaseous State

Q: Calculate the heat absorbed when 117 g of liquid ethanol at 25.0°C is converted to gaseous ethanol…

A: The heat absorbed in the above process is given by  Q = m X Cl X ΔTl + ΔHvap X n + m X Cg X ΔTg…

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: Refer to the gragh and the given answer letters (ex, "a") to answer to the each of the following…

A: 1) The temperature at point a is the b. normal freezing point.

Q: 3. How much energy would be needed to vaporize 2.8 g of water?

A: nwater = mass/ molar mass = 2.8/18 = 0.155 mol

Q: Which phase change is correctly labelled? Subliming - exothermic O Vapourizing - exothermic O…

A: Exothermic process means energy is release while in endothermic we have to supple energy.

Q: Understanding the connection between vapour pressure, boiling point, and enthalpy of vapourisation.

A: In the given question, correct option from column 2 need to be determined by using the observation…

Q: How much heat is required to vaporize 2 kg of water at 73 Celsius

A: heat is required to vaporize 2 kg of water at 73 Celsius

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

A: All three answer are based on two points which are given below Enthalpy of vaporisation direct…

Q: 7. What happens to the average kinetic energy of the substance in Region II of the cooling curve?…

A: 1) we know kinetic energy is directly proportional to the temperature. In the given graph the region…

Q: Calculate the heat change in joules for vaporization of 9.00 g of water at 100 ∘C.

A: Heat of vaporisation of water is 2256 J/g/0C.Thus, when 1 mol ( 18 g) of water is vaporised, 2256…

Q: The boiling point of H2 is -252.9 degrees celcesus will H2 be a liquid or a gas at -254 degrees…

A: At the lower temperature of boiling point, compound will be in a liquid state.

Q: how much energy is required to vaporize 125 g of benzene c6h6 at its boiling point 80.1 C

A: Given, Mass of benzene =125 g Boiling point =80.1°C