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Question:
An aqueous solution is 13.0 % by mass ethanol, CH3CH2OH, and has a density of 0.978 g/mL.
The mole fraction of ethanol in the solution is.
What is the velocity of an electron that has a de Broglie wavelength approximately the length of a chemical bond? Assume this length to be 2.9×10?10m
Question- Why can moles of reactants and products, rather than their concentrations, be used in the equilibrium constant expression
Your instructions should include the volumes of the solutions required. (1b) (4 marks) What is the buffer capacity of the resulting solution
Predict the chemical formula of the compound that results from the reaction between the elements Si and O.
Question- In 1982 a team of German physicists synthesized a new element by smashing an iron-58 nucleus into a bismuth-209 target. If a neutron was released from the collision, what is the new nuclide
why does the introduction of a para nitro group have a much greater effect on the acidity constant of phenol than it
Problem- Please explain the difference between an ion trap, a quadrapole mass spec and a time of flight mass spec
Compare this energy ( 23 Joules) to the amount of energy absorbed by a person's body if they jumped from a chair to the floor (assume that all of the energy from the fall is absorbed by the person and h=0.5 m).
Put the species below in the order of strongest to weakest nitrogen-oxygen bond. Including Lewis structures and formal charges.
Derive an equation for emission rate as well as concentration rate of carbon monoxide as a function of time? Considering a room with candle emitting CO.
Researchers have created artificial red blood cells. These artificial red blood cells are cleared from circulation by a first-order reaction with a half- life of 3 hours
While 1,2- dibromodecane is treated with potassium hydroxide a strong base, it yields a mixture of three isomeric compounds A-C of molecular formula C10H19Br.
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