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What are two elements that produce background radiation on earth and what do their decay equations look like?
What is the wavelength (in nm) of a photon emitted during transition
A moth-ball, composed of naphthalene (C10H8), has a mass of 1.32 g. How many naphthalene molecules does it contain?
Assuming the density of a 5% acetic acid by mass solution is 1.0 g/ml, determine the volume of the acetic acid solution necessary to neutralize 25.0 ml of 0.10 M NaOH.
The standard reduction potential for a substance indicates how readily that substance gains electrons relative to other substances at standard conditions. Consider the following: Ni2+(aq)+2e- -> Ni(s), E red = -0.23 V Cu2+(aq)+2e- -> Cu(s), E red ..
a balloon that contains 0.500 l of helium at 25 c is cooled to 11c at a constant pressure. what volume does the balloon
Identify compound Z in the following sequence. (CH3)2CHCH2CN ---HCl, H2O, heat---> compound X ---1. LiAlH4, diethylether, 2. H20 ---> compound Y --- PCC, CH2Cl2 ------> compound Z 1. (CH3)2CHCH2COH (the O is double bonded to the C)
5.0 g of a substance is mixed with 125g of benzene. This will lead to a boiling point of 0.65K. Calculate the freezing point
How long would it take for 1.50 mol of water at 100.0 degree's C to be converted completely into steam if heat were added at a constant rate of 22.0 J/s
Assumine the rate law for the system is rate= k(I-)^x(S208)^y, what are the values of x and y for the system
if 114 kilo joule is given off per mole of ethylene reacting determine how much heat is released when 14.8 kilo grams
molybdenum forms a substitutional solid solution with tungsten. calculate the concentration in weight percent of
Write chemical equations for the reaction of calcium with the following substances, making sure that the numbers and kinds of atoms are the same on both sides of the equations.
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