NkT PV = nRT PV = Pa pressure P = m volume V = moles n particles
... An equation of state interrelates these macroscopic parameters in a single equation. An ideal gas is a low-density gas at high temperature where intermolecular interactions and the volume of the gas molecules are negligible. ...
... An equation of state interrelates these macroscopic parameters in a single equation. An ideal gas is a low-density gas at high temperature where intermolecular interactions and the volume of the gas molecules are negligible. ...
Density of solutions answers The concentration of solutions is often
... Prepare solutions of sodium chloride in distilled water consisting of the following percentage by weight: 5%,10%,15%,20%,25%. Prepare 25 g of each solution (you do not have to prepare 100g of each solution to be able to use the percentage composition). Make the weight determination of solute and sol ...
... Prepare solutions of sodium chloride in distilled water consisting of the following percentage by weight: 5%,10%,15%,20%,25%. Prepare 25 g of each solution (you do not have to prepare 100g of each solution to be able to use the percentage composition). Make the weight determination of solute and sol ...
lec03 - McMaster Chemistry
... ENERGY is the capacity to do work or transfer heat. HEAT is the form of energy that flows between 2 samples because of a difference in temperature. WORK is the form of energy that results in a macroscopic displacement of matter such as gas expansion or motion of an object (force x distance) Other fo ...
... ENERGY is the capacity to do work or transfer heat. HEAT is the form of energy that flows between 2 samples because of a difference in temperature. WORK is the form of energy that results in a macroscopic displacement of matter such as gas expansion or motion of an object (force x distance) Other fo ...
Mid Term Exam Topics 1-5 solution - OCW
... 4.- (1.5 point) Vapor pressure of benzene and ethanol at 50ºC are: 271 and 220 Torr respectively. a) (0.5 point) Calculate the vapor pressure of a mixture containing the same weights of both substances at 50ºC as well as, b) (0.5 point) the molar fraction of ethanol in the vapor phase assuming ideal ...
... 4.- (1.5 point) Vapor pressure of benzene and ethanol at 50ºC are: 271 and 220 Torr respectively. a) (0.5 point) Calculate the vapor pressure of a mixture containing the same weights of both substances at 50ºC as well as, b) (0.5 point) the molar fraction of ethanol in the vapor phase assuming ideal ...
Lecture Notes 1. Introduction File
... A difficult subject may be broached in a simple way by asking how the internal energy, U, of this collection of molecules in a box is related to the pressure, and temperature. This is a problem simple enough to address using the “bottom up” approach. Only the internal energy of the gas due to the tr ...
... A difficult subject may be broached in a simple way by asking how the internal energy, U, of this collection of molecules in a box is related to the pressure, and temperature. This is a problem simple enough to address using the “bottom up” approach. Only the internal energy of the gas due to the tr ...
Enthalpy - slider-dpchemistry-11
... The temperature of the water increased from 15.00C to 800C. Determine the heat energy change of the water. (note: the density of water is 1.0 g cm-3) 2. The same Bunsen burner was used to heat a 500g block of copper for 10 minutes. Assuming the same amount of energy is transferred from the Bunsen bu ...
... The temperature of the water increased from 15.00C to 800C. Determine the heat energy change of the water. (note: the density of water is 1.0 g cm-3) 2. The same Bunsen burner was used to heat a 500g block of copper for 10 minutes. Assuming the same amount of energy is transferred from the Bunsen bu ...
17 Oct 08 - Seattle Central College
... • In this way, the combustion of gas in your car, even though it results in the production of gases, is not PVwork… • The volume change in the system relative to the amount of gas produced is so small that the pressure does not remain constant. • Useful work comes from a clever partitioning of the h ...
... • In this way, the combustion of gas in your car, even though it results in the production of gases, is not PVwork… • The volume change in the system relative to the amount of gas produced is so small that the pressure does not remain constant. • Useful work comes from a clever partitioning of the h ...
Lecture 1 and 2a - Thermochemistry
... Heat capacity is the heat required to raise an object by a number one degree Celsius. Larger objects have more heat capacity than smaller objects of the same composition. The units of heat capacity are J/°C or equivalently J/K. Specific heat capacity is the heat required to raise an object of one gr ...
... Heat capacity is the heat required to raise an object by a number one degree Celsius. Larger objects have more heat capacity than smaller objects of the same composition. The units of heat capacity are J/°C or equivalently J/K. Specific heat capacity is the heat required to raise an object of one gr ...
presentation source
... 10 Calories (10 kcal) per serving”. To test the claim, a chemist at the Department of Consumer Affairs places one serving in a bomb calorimeter and burns it in O2 (the heat capacity of the calorimeter = 8.151 kJ/K). The temperature increases by 4.937 oC. Is the manufacturer’s claim correct? ...
... 10 Calories (10 kcal) per serving”. To test the claim, a chemist at the Department of Consumer Affairs places one serving in a bomb calorimeter and burns it in O2 (the heat capacity of the calorimeter = 8.151 kJ/K). The temperature increases by 4.937 oC. Is the manufacturer’s claim correct? ...
Unit 3 - Salina USD 305
... It is up to the other members of the group to determine if the name and formula are correct. If the formula is right, the student gets to move 3 spaces on the board. If the name is correct they get to move 2 spaces. Both correct answers result in a player moving 5 spaces on the game board. Play cont ...
... It is up to the other members of the group to determine if the name and formula are correct. If the formula is right, the student gets to move 3 spaces on the board. If the name is correct they get to move 2 spaces. Both correct answers result in a player moving 5 spaces on the game board. Play cont ...
Metals
... •The nucleus of the atom carries most of the mass. • It consists of the protons and neutrons surrounded by a cloud of electrons. The charge on the electron is –1 ...
... •The nucleus of the atom carries most of the mass. • It consists of the protons and neutrons surrounded by a cloud of electrons. The charge on the electron is –1 ...
CHEMISTRY 102 Spring 2012 Hour Exam III Page 20 1. For the
... A 25.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/C mol) is heated to 82.4C and dropped into a coffee cup calorimeter containing water initially at 22.3C. The final temperature of the water and aluminum mixture is 24.9C. Calculate the mass of water in the calorimeter. The sp ...
... A 25.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/C mol) is heated to 82.4C and dropped into a coffee cup calorimeter containing water initially at 22.3C. The final temperature of the water and aluminum mixture is 24.9C. Calculate the mass of water in the calorimeter. The sp ...
Thermochemistry guided notes
... The composition of petroleum varies from 5 to 25 or more Carbons in the chains. For petroleum to be used efficiently, the petroleum must be separated into fractions by boiling. The lighter molecules, those with lower boiling points, can be boiled off. The petroleum era began when the demand for lamp ...
... The composition of petroleum varies from 5 to 25 or more Carbons in the chains. For petroleum to be used efficiently, the petroleum must be separated into fractions by boiling. The lighter molecules, those with lower boiling points, can be boiled off. The petroleum era began when the demand for lamp ...
03 nanoparticles part 7 File - e-learning
... the possibility to produce metals and semiconductors. Disadvantages are hard aggregates and huge aerosol formation. ...
... the possibility to produce metals and semiconductors. Disadvantages are hard aggregates and huge aerosol formation. ...
Slide 1 - Western Engineering
... • If not tabulated, it can be calculated from the energy of formation, hf, of the individual chemical species at 25°C and 1 atm. ∆h0 = ∑n*hf - ∑n*hf ; n = kmol of species/kmol fuel Products Reactants ...
... • If not tabulated, it can be calculated from the energy of formation, hf, of the individual chemical species at 25°C and 1 atm. ∆h0 = ∑n*hf - ∑n*hf ; n = kmol of species/kmol fuel Products Reactants ...
Tall: 1) The decomposition of CaCO3 is an endothermic process:
... Neither PbCl2 nor PbF2 are appreciably soluble in water. If solid PbCl2 and solid PbF2 are placed in separate beakers, in which beaker is the [Pb2+] greatest? Explain your choice. The equilibrium constants for the solids dissolving in water are: PbCl2(s) Pb2+(aq) + 2 Cl¯(aq) PbF2(s) Pb2+(aq) + 2 ...
... Neither PbCl2 nor PbF2 are appreciably soluble in water. If solid PbCl2 and solid PbF2 are placed in separate beakers, in which beaker is the [Pb2+] greatest? Explain your choice. The equilibrium constants for the solids dissolving in water are: PbCl2(s) Pb2+(aq) + 2 Cl¯(aq) PbF2(s) Pb2+(aq) + 2 ...
Document
... Nanoscience is the study of small particles that are between 1 and 100 nanometres in size 1 nanometre (1 nm) = 1 x 10-9 metres (0.000 000 001m or a billionth of a metre) Nanoparticles show different properties to the same materials in bulk and have a high surface area to volume ratio. This may lead ...
... Nanoscience is the study of small particles that are between 1 and 100 nanometres in size 1 nanometre (1 nm) = 1 x 10-9 metres (0.000 000 001m or a billionth of a metre) Nanoparticles show different properties to the same materials in bulk and have a high surface area to volume ratio. This may lead ...
File
... Long-chain fatty acids such as palmitic acid, CH3(CH2)14COOH, are one of the two major sources of energy in our diet. Calculate the DHrxn0 for the combustion of palmitic acid and glucose, C6H12O6. Based on the energy released upon combustion per gram, which is the better fuel: glucose or palmitic ac ...
... Long-chain fatty acids such as palmitic acid, CH3(CH2)14COOH, are one of the two major sources of energy in our diet. Calculate the DHrxn0 for the combustion of palmitic acid and glucose, C6H12O6. Based on the energy released upon combustion per gram, which is the better fuel: glucose or palmitic ac ...
Chemical thermodynamics
Chemical thermodynamics is the study of the interrelation of heat and work with chemical reactions or with physical changes of state within the confines of the laws of thermodynamics. Chemical thermodynamics involves not only laboratory measurements of various thermodynamic properties, but also the application of mathematical methods to the study of chemical questions and the spontaneity of processes.The structure of chemical thermodynamics is based on the first two laws of thermodynamics. Starting from the first and second laws of thermodynamics, four equations called the ""fundamental equations of Gibbs"" can be derived. From these four, a multitude of equations, relating the thermodynamic properties of the thermodynamic system can be derived using relatively simple mathematics. This outlines the mathematical framework of chemical thermodynamics.