A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. Here is graph of the results: 150 130. 110. 90. temperature (°C) 70. 50. 30. 10. heat added (kJ/mol) Use this graph to answer the following questions: What is the melting point of X ? (check that apply) O solid What phase (physical state) of X would you expect to find in the flask after 4 kJ/mol of heat has been added? O liquid O gas

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: When the temperature is increased the solid starts to absorb heat up to a certain point that is for…

Q: A pure sample of Substance S is put into an evacuated flask. The flask is then heated steadily and…

A: The graph for substance S given is,

Q: 16. What is the amount of heat required to melt 100 g of ice completely at -10°C? (a) 6048 cal (b)…

A: Latent heat of fusion of ice = 80.64cal/g

Q: Stud Previous Page 27 of 36 E Next O References Use the References to access important values if…

A: Use Clausius - Clapeyron equation to calculate enthalpy of vaporization :

Q: A student prepared the graph shown based on the vapor pressure of a liquid over a range of…

A: Since the graph is not shown and the equation is not represented properly, thus considering it to be…

Q: (1) Vapor pressure over ice is 0.3510 Torr at -28.00°C and 0.2318 Torr at -32.00°C (a) Find the…

A: Clausius - Clapeyron equation is used generally for such problems which is expressed as…

Q: Calculate the heat absorbed when 68.8g of ice at -30 C is converted to steam at 160 C

A: The process has steps like  I. Heating of ice to 0oC II. Melting of ice at 0oC III. Heating of water…

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A:

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: Answer:- This question is answered by using the heat curve of the solid which gives information…

Q: 440.0 grams of ice are at-50.0 degrees C, and are heated to 22.0 degrees. How much heat is absorbed…

A: The specific heat is the amount of heat per unit mass required to raise the temperature by one…

Q: If a pure substance begins at point C on the phase diagram below and the pressure on the substance…

A: The problem is based on phase daigram of substance.So we have to identify the the state of substance…

Q: 3. Use the phase diagram shown here to answer the following questions: Normal MP Normal BP 1.0…

A: Solution are given below:

Q: A pure .e of Substance S is put into an evacuated flask. The flask is then heated steadily and the…

A:

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: These phase diagram represents different phase of a substance at different temperatures. During a…

Q: The pressure above a pure sample of solid Substance X at - 184. °C is raised. At what pressure will…

A: The given temperature is (-184 + 273.15)K = 89.15 K

Q: Methanol has a normal boiling point of 65°C and a heat of vaporization of 35.2 kJ/mol. What is the…

A:

Q: How much heat is required to convert 18.0 g of ice at -10.0°C to steam at 100.0°C? Express  your…

A:

Q: A sample of C₃H₄Br₂ has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A: At a pressure of 540 mm Hg, the boiling temperature in oC of C₃H₄Br₂ is;…

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: Boiling is the temperature at which the vapor pressure of the liquid exceeds the atmospheric…

A: At high altitude, atmospheric pressure is low and hence water boils at lower temperature.

Q: C.The normal boiling point for ammonia is -33.2°C. What is happening to ammonia D.If we are going to…

A: C) Given: The normal boiling point for ammonia is -33.2°C.

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: the temperature versus the heat added curve is known as heating curve. from the curve we can…

Q: Consider the phase diagram for carbon dioxide. 73.0F In what phase is CO, at 72 atm and 0 °C? solld…

A:

Q: Using the provided data, calculate the amount of heat, in kJ, that must be removed to cool 17.0 g of…

A: The amount of heat released when 17g of gaseous acetone cools from 73°C to -115°C is calculated as,

Q: A phase change graph is shown below. What is the melting point of this substance?

A: If a substance is gradually heated, it goes under the phase transitions as follows: Solid…

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: Given:  Temperature vs Heat supplied graph for Substance X.

Q: Using the provided data, calculate the amount of heat, in kJ, that must be removed to cool 19.2 g of…

A:

Q: The specific heat capacity of liquid ammonia is 4700J/Kg.K and its latent heat of vaporization is…

A:

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: melting point of X will be -10 degree celcius

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A:

Q: A pure sample of Substance S is put into an evacuated flask. The flask is then heated steadily and…

A: Heat capacity is the physical property of a substance that defines the amount of heat needed to…

Q: Consider the phase diagram for carbon dioxide. 73.0 In what phase is Co, at 25 atm and -65 °C? solid…

A: Phase diagram: The phase diagram is a chart used to show conditions pressure and temperature at…

Q: Consider the heating curve for 1.00 mole of an unknown substance as it is heated from a solid to a…

A: We are having an heating curve of substance, we have to predict line having both solid and liquid…

Q: The heat of vaporization for ethyl ether is 351 Jig and that for ethyl alcohol is 855 Jig. From…

A: Given: Heat of vaporization for ethyl ether = 351 J/g. And the heat of vaporization for ethyl…

Q: Consider

A: Enthalpy of vaporisation is heya realease when liquid convert into gas

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: Answer -  The substance is solid at   and the melting point of the substance is  . The substance…

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: Five grams of steam at 110 C is cooled and frozen to -10 C.  Draw a temperature us cooling diagram…

A: Steam gets cooled till 100 ◦C then it gets converted into liquid at 100  ◦C. Then liquid gets cooled…

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: The provided curve is the heating curve of the compound which states the change in the phase of the…

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: A phase diagram represents different phase change simultaneously with temperature.

Q: A pure sample of Substance S is put into an evacuated flask. The flask is then heated steadily and…

A: The graph of S given is,

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: Soln

Q: Classify the following phase changes as processes that require the input of energy, or as processes…

A: The processes given are Vaporizing, Condensing, Deposition, Subliming, Melting and Freezing.

Q: A substance has a melting point of -25.0°C, an enthalpy of fusion of 1200 Jg¹; specific heats for…

A: When a solid substance is heated its temperature increases and at its melting point it will be…

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A: Phase transitions occurs when a substance changes its state from solid to liquid, liquid to gas and…

Q: A sample of C₃H₄Br₂ has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A:

Q: The pressure above a pure sample of solid Substance X at – 219. °C is raised. At what pressure will…

A: The relation between degree Celsius (○C)and Kelvin (K) is expressed below.T(K) = 273 + T(○C)  Use…

Q: A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady…

A:

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

A:

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.