A heating curve for the compound "benzene" is shown.  Which regions of the heating curve are where benzene is boiling?

Q: How many kilojoules are released when 10.0 g of steam at 112°C condenses, cools to 0°C and freezes…

A: Given  10.0 g of steam at 112°C condenses, cools to0°C and freezes at -25°C. Heat of fusion= 334J/g…

Q: How much heat is necessary to melt 12.8 g of solid gold? The heat of fusion of gold is 15.3 cal/g.

A: Given,mass of the solid gold = 12.8 gThe heat of fusion of gold = 15.3 cal/g

Q: <. aph shows a heat curve for an unidentified substance disco 400 380 360 340 320 300 280 260 240…

A: From the heating curve,  Fusion is the temperature at which vapor pressure of solid is equals to…

Q: Calculate the heat required to vaporize 102 g of water at a temperature of 100oC   if the Heat of…

A: The process of conversion of a substance in its liquid state into its gaseous state is called…

Q: Given that a 10.0 g sample of ice at 0.0 °C melts and then the resultant water proceeds to warm to…

A:

Q: bon disulfide, CS2, is a volatile, flammable liquid. It has a vapor pressure of 340. his substance?…

A:

Q: Benzene has a boiling point of 80.1 °C, and a specific heat capacity of 1.8 J/g °C in the liquid…

A: we have to calculate the heat released when benzene is cooled from 114 degree C to 55.1 degree C

Q: Which of the followig substances would have the lowest vapor pressure at 298 K? The boiling points…

A: Ans is d

Q: Substance Substance A Substance B Substance C Molecular Component OH OH Substance Substance D…

A:

Q: Determine the total amount of energy required to heat 17.5 g of ethanol at -90.0 °C to ethanol vapor…

A: The mass of one mole of ethanol is 46 g/mol. This implies that 17.5 g of ethanol constitutes 0.38…

Q: 5. The normal melting point of water is 0°C the normal boiling point is 100°C. The heat of…

A: Scientists describe heat as thermal energy transmitted between two systems at different temperatures…

Q: Calculate the total amount of emergy (in kJ) necessary to raise the temperature of 2.00L of ethanol…

A: given - volume = 2 L = 2000 cm3 density = 0.7849 g/cm3 final temperature = 78.3 oC initial…

Q: How much energy is removed when 45 grams of ethanol condenses to liquid? Ethanol heat of…

A: Given : Mass of ethanol condensed = 45 g Molar mass of ethanol = 46 g/mol. And heat of vaporisation…

Q: Rank the elements or compounds in the table below in decreasing order of their boiling points. That…

A: Need to focus on what kind of intermolecular attraction between the molecules present in the…

Q: How much heat is given off when 175g of water freezes at 0℃? Hf = 334 J/g ; Hv = 2260 J/g

A:

Q: The graph below shows the heating curve for a sample of water in an open container (ie. 1 atm…

A:

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: Which substance will have the highest boiling point Oa) CHBry OD) CHCH, Oa CHF

A: Boiling point is the temperature at which liquid converts into its vapor state.

Q: one gram of gas to liquid

A:

Q: A 30.0 gram solid substance melts fully at 5.4 degrees celsius when it absorbs 3.8 kJ of heat. What…

A: Given : mass of solid melting = 30.0 g And heat absorbed = 3.8 KJ = 3800 J…

Q: what intermolecular forces are present in a pure sample of ethanol?

A:

Q: A student heats water to make spaghetti. The student observes that the water in the pot is converted…

A: (1) over the pot (2) on kitchen window

Q: The heat of vaporization of water is 40.65 kJ/mol. How much heat is required to vaporize 330 g of…

A: We know the amount of heat or energy required to vaporize water into the gas at its boiling point is…

Q: What are the definitions and explanantions of the four intermolecular forces?

A:

Q: At a pressure of 1 atm and a temperature of 50 At a pressure of 10 atm and a temperature of 10 At a…

A: Liquid Phase Liquid Phase Liquid Phase

Q: Liquid ammonia can be used as a refrigerant and heat transfer fluid. How much energy is required to…

A: Given: Liquid NH3: mass = 25.0 gramsTemperature = -76°C (initial temperature)Cp (liquid ammonia) =…

Q: Chloroform, formerly used as an anesthetic and now believed to be a carcinogen, has a heat of…

A:

Q: A 193.1 g sample of water at 21.2°C is heated to steam at 131.5°C. How much heat was absorbed?

A:

Q: How much heat is necessary to melt 12.8 g of solid gold? The heat of fusion of gold is 15.3 cal/g.

A: The objective of the question is to calculate the amount of heat required to melt 12.8 g of solid…

Q: 5 mol of Hg are vaporized. Its heat of vaporization is 58 kJ/mol. How much heat is needed to…

A: given  heat of vaporization is 58 kJ/mol

Q: Caculate the mass of water that can be vaporized at its boiling point with 200kj of heat

A: The moles of water that can be vapourised is determined first by using the given heat value and the…

Q: The heat of fusion is equal to the heat of solidification. True O False

A: True

Q: Draw the general shape of the temperature-energy graph for ethanol from: -200 oC to 100 oC. The…

A:

Q: 6. A substance has the following properties; Boiling Point = 120°C, Freezing Point = -20°C, specific…

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: What amount of thermal energy (in kJ) is required to convert 38.2 g of ethanol at -148 °C completely…

A: Given,  Ethanol at standard condition is in liquid 38.2 g of liquid ethanol at -148°C is converted…

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.