1. Using a glass syringe, a scientist draws exactly 25.5 cm of dry oxygen at 20.0 C trom a metal cylinder. She needs to heat the oxygen for an experiment, so she places the syringe in an oven at 65.0 C and leaves it there for 30 min. Assuming the atmospheric pressure remains the same, what volume will the oxygen occupy? 2. The a volume of 350 mL. If the can is left in a car that reaches 50°C on a hot day, what is the new pressure in the can? gas in the can of hair spray is initially at 24 °C and 360 kPa, and the can has 3. A sample of gas has a volume of 15.0 mL at a pressure of 13.0 psi. Determine the pressure of the gas at a volume of 7.5 ml.

Q: The freezing point of mercury is -38.8 °C. What quantity of energy in joules is released to the…

A: Since, you have posted multiple questions, we will solve only first question for you. To get other…

Q: Determine the pressure exerted by hydrogen bromide (HBr) gas having a density of 2.978 g/L at a…

A:

Q: Probability, f(c) Unauthorized copying or reusing any part of this page is legal, : + המ"כ -ע 228…

A:

Q: The quantity of 10% w/w/ sodium chloride solution that can be made from 0.5 av. lb of 18% w/w sodium…

A: We have 18% w/w/ sodium chloride solution.

Q: The boiling point of benzene is 80°C. Which pair of samples will have the same average kinetic…

A:

Q: In 20 seconds, 50cm^3 of x diffused through a porous plug and the same volume of oxygen diffused in…

A: Here in 20 sec 50cm^3 of gas X diffused through a porous plug and same volume of O2 gas diffused in…

Q: 1. In a combustion process of a coal-fired power plant, 20% excess of the theoretical amount of…

A: Answer is below

Q: A student obtained a clean flask. She weighed the flask and stopper on an analytical balance and…

A: Given data,Mass of filled flask=49.379gMass of empty flask=22.534gTemperature=21oC

Q: Solar winds composed of free protons, electrons, and particles bombard Earth constantly, knocking…

A: Given data: Earth loses 3.0Kg matter/sec. Time given=50billion years. Mass % of nitrogen occupied of…

Q: A sample of gaseous krypton is heated with an electrical coil. If 47.2 Joules of energy are added to…

A: Q = m x s (T2 - T1) Where, Q = heat absorbed, m = mass in g, T1 = initial temperature, T2 = Final…

Q: be Maps O GASES Understanding how average molecular kinetic energy scales wi... Lindsay Five samples…

A: According to kinetic theory of gases The average kinetic energy of atoms or molecules is directly…

Q: uestion 5 of 11 ew Policies ow Attempt History urrent Attempt in Progress Incorrect. The second…

A:

Q: Why does a 0.01 g change in mass cause a much larger change in MM than does a 1 degree change in…

A: Millimolar is the smaller unit of molar concentration. 1MM=millimoles of solute/L of soultion

Q: . In a mixture of the gases oxygen and helium, which statement is valid?(a) The helium atoms will be…

A:

Q: About how long would it take hydrogen cyanide gas (HCN) to travel 10.0 meters at 25.0°C, when its…

A: The 1 J is equal to 1kg.m2s-2 and 1kJ is equal to 1000 J. Thus, 3.72 kJ is equal to 3.72×103…

Q: 6. The pharmacy believes that the reaction, when it occurs in the stomach, may have an unintended…

A: In continuation of the earlier problem 5, the no. of moles of CO2 = 0.167mole

Q: A student obtained a clean flask. She weighed the flask and stopper on an analytical balance and…

A: Given that : The mass of the flask and stopper (empty flask) = 22.534 g The mass of flask filled…

Q: The Greater Vancouver Regional District (GVRD)chlorinates the water supply of the region at the…

A: Parts per million (ppm) is defined as the amount (kg, moles, or any unit) of a substance present in…

Q: 8. One way to cool a cup of coffee is to plunge an ice-cold piece of aluminum into it. Suppose a 2…

A: According to the question,  Mass of piece of aluminum = m = 20g Initial temperature of aluminium = 0…

Q: mixtures =) Complete: A mixture is composed of substances which are not chemically combined.…

A: Let us define the mixture and then fill the blanks.

Q: You add a 150-g sample of iron that has been heated to 85.0oC is placed into an insulated container…

A: The heat flow between the two substances is calculated by using the formula, where, m is the mass.…

Q: On a cold 14.3 °C day, a basketball has deflated to a volume of 6.97 L.  To what temperature, in oC,…

A: The gaseous state is the state of matter with least intermolecular force of attraction between…

Q: which one are gases? a:) Hz e.)al oF b.) CH4 aboe C.) NZ

A: Properties of gases is, Gas can be mixed easily. Gas can be compressed. Gas having lower density.

Q: 10.0 g sample of metal at 78 C is submerged in 50.0 mL of water at 25 C, the final temperature of…

A:

Q: A sample of gaseous helium is heated with an electrical coil. If 932 Joules of energy are added to a…

A: We can use the formula  Q= m x c x ∆T  Or  Q = m x c x (Tfinal - Tinitial)  Now Q = Heat = 932…

Q: he auerage ura capa city fa4-yer-ald is obaut 3coL. How nicnly noles uf gGs (car) do he ungs of an…

A: Solve the problem using given information and plug values in Ideal gas law.

Q: Pressure (atm) Select the path(s) that lead to changes in BOTH the average kinetic and potential…

A: The path that leads to change in both average kinetic and potential energy of the system is iii) f→a…

Q: A sample of gaseous oxygen is heated with an electrical coil. If 178 Joules of energy are added to a…

A: The energy released or added in a system can be calculated through this formula:…

Q: 1. Due to diffusion a) Spread of radioactive particles around the world b) Spread of mercury waste…

A: 1. Few information about diffusion: If molecules present in one region and are rich in concentration…

Q: A  4.03  kg piece of granite with a specific heat of 0.803 J g-1 °C-1 and a temperature of  93.5  °C…

A: Given, Mass of granite = 4.03  kg Specific heat of 0.803 J g-1 °C-1

Q: CaCO3 decomposes at 1200° C to form CO2 gas and Cao. If 25 L of CO2 are collected at 1200° C, what…

A: Ideal Gas Law : According to ideal gas law at a temperature T, pressure P , if the volume occupied…

Q: If two gasses, helium and krypton, are mixed in a rigid container and heated to 315 K. What is true…

A:

Q: 13. A student takes 22 grams of an unknown metal places them into a boiling water bath She leaves…

A: Given data mass of metal = 22 g Initial temperature of metal = 100 oC mass of water = 90 g Initial…

Q: A sample of solid aluminum is heated with an electrical coil. If 164 Joules of energy are added to a…

A: Specific heat capacity is the amount of heat in Joules is required by the substance to raise its…

Q: 5. A 500.0-g iron bar at 212°C is placed in 2.0 L of water at 24°C. What will be the change in…

A: Here, we need to answer the 5th Question which allows us to calculate the change in temperature of…

Q: A 32.65-g sample of a solid is placed in a flask. Toluene, inwhich the solid is insoluble, is added…

A: We are asked to find the density of the solid: Where density = mass*volume

Q: A sample of gaseous oxygen is heated with an electrical coil. If 148 Joules of energy are added

A: Added energy       Q = m × S × ∆T  Where       Q = 148 J (energy added to oxygen)       m = mass of…

Q: A sample of liquid mercury is heated with an electrical coil. If 28.8 Joules of energy are added to…

A:

Q: 9) Incandescent light bulbs can get very hot to the touch as they convert much of the electrical…

A: A 60W light bulb has a volume of 180 mL at SATP. The light bulb is switched on and the heated glass…

Q: 7. A movable piston contains a sample of 680 mL of neon gas with a temperature of -5C. When the…

A: 7. Given :  initial volume = 680 mL  final volume = 1.32 L  initial temperature = -5°C  To calculate…

Q: How much energy is required to raise the temperature of 10.8 grams of gaseous helium from 24.6 °C to…

A: Helium is inert gas  Helium atomic number is 2  Helium mass number is 4

Q: volume of gas inside a balloon expands from 5 L to 15 L. The temperature of the gas before this…

A: Gas laws are being used to show the relationship between pressure, volume, and temperature. Boyle's…

Q: A hot air balloon has a volume of one million liters. If the temperature of the outside air is 20°C…

A: Ideal gas equation: The temperature, pressure, volume, and mole of the gas are related to the ideal…

Q: A coin dealer offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The…

A: Given,Weight of coin = 17.0 gWeight of water = 29.0 gSpecific heat of nickel, s = 0.445…

Q: In one demonstration of this reaction, 36.00 mL of H2 are collected over water at 25°C. Atmospheric…

A: Here given, Pressure (P) = 749 mmHg = (749/760) atm = 0.9855 atm Volume (V) = 36 mL = 0.036 L…

Q: A student obtained a clean flask. She weighed the flask and stopper on an analytical balance and…

A:

Q: What is the new volume of a 1.75L sample of nitrogen that is heated from 25 C to 300 C?

A:

Q: Which of the following gases would have the greatest average kinetic energy at 0°C? O A. CO2 о в. Не…

A: Average kinetic energy per mole of gas = 3/2 RT Where , R= gas constant,  T= Temperature  And here…

Q: A Porticn cf the Sun's ener9y ccmes From tte reacticn 4H He t 29e which requires a temperatiore of…

A:

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.