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One mole of nitrogen gas confined within a cylinder by a piston is heated from 9.1°C to 883.6°C at 1.30 atm.
A compound containg only carbon and hydrogen is 7.74% H by mass and has a molar mass of 78.1 g/mol.
Calculate the standard enthalpy of formation of gaseous diborane, B2H6, using the following thermochemical information.
The DH of combustion of CH4 is -882kJ/mol.How many grams of water, which has a specific heat of 4.184 J/g-oC can be heated from 30oC to 95oC.
Nitrosyl chloride (NOCl) decomposes at elevated temperatures according to the eqation 2 NOCl(g) 2 NO(g) + Cl2(g)
Some of the butane, C4H10(g), in a 200.0 liter cylinder at 25.0 degrees C is withdrawn and burned at a constant pressure in an excess of air.
Consider the enolization of malonic acid. Given ?Hrxn and ?srxn derive an expression for the extent of reaction as a function of temperatures, ? (T).
What is the amount of energy packaged in a photon with a wavelength of 310 nm ?
Calculate the vapor pressure of water above a solution prepared, by adding 43.5 g. of lactose (C12H22O11) to 100.0 g. of water at 30.0 degrees C.
Identify the conjugate acid-base pairs in this equilibrium.The value of the equilibrium constant for the above reaction is 5.7 x 10^-8
To vaporize a 1.50 g sample of liquid benzene C6H6 requires 652 J of heat. What is change of heat vapn of benzene in kilojoules per mole?
What does the useful work derived do such that the entropy increases (additional to that increased along with enthalpy).
Why would one liquid be hotter than the other? What is the final temp of each liquid?
Balancing Chemical Equations and Finding Products.The equations for two chemical reactions shown below are not balanced
Both have the same length and width. Which will absorb more heat when set on a hotplate for the same period of time to raise the temperature.
Firstly, how do you calculate the molar solubility of AgBr when given 0.1 M AgBr at 25 degrees C (Ksp = 5 x 10^-3)?
Evaluate Delta H (standard) for the reaction below at 25 degress celcius: SiO2 (s) + 4HF (aq) >>>>>>> SiF4 (g) + 2H2O (l)
Boiling Point, Vaporization and Electronic Configuration1. Place these hydrocarbons in order of decreasing boiling point
How many moles of carbon dioxide will be produced if 50g of potassium hygrogen carbonate are heated?
For the reaction CO+NO2>CO2+NO the activation energy for the forward reaction is 135 kJ/mol of CO activated.
An atom of the isotope sulfur - 31 consists of how many protons, neutrons, and electrons, (p = proton, e = electron, n = neutron)
Calculate the specific heat capacity of benzene(C6H6), given that 192 J of heat is required to raise the temperature of a 20.0g sample of benzene.
How will each of the following changes in condition alter the rate of an enzyme-catalyzed reaction:Decreasing temp to 10 deg C?
A chemist ran the reaction CH3CH2Cl(l) + KOH(aq) ^ CH3CH2OH(l) +KCL(aq) by heating 47.2 grams of CH3CH2Cl with excess KOH.
What is a likely source of error in identifying a compound using thin layer chromatography?