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How many resonance peaks should be observed in the hydrogen - decoupled C 13 - NMR spectrum of each of the following compounds?
toluene
p-chlorobenzoic acid
2-propanol
Write the net ionic reaction from the following balanced reactions: 1. FeCl3 (aq) + K3PO4 (aq) = FePO4 (s) + 3 KCI (aq) 2. Ba(NO3)2 (aq) + Ag2SO4 (aq) = 2 AgNO3(aq) + BaSO4 (s)
The jewelry contains only gold and silver, which have densities of 19.3 and 10.5 , respectively. If the total volume of the jewelry is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in th..
What is the average rotational energy assuming that only J=0 to 4 levels are populated in the vibrational ground state n=0?
Compute how many titanium atoms are there in 24.1 grams of titanium and also determine what is the mass in grams of 3.23E+23 atoms of titanium.
Calculate how much heat is released when 4.5 g of methane is burned in a constant pressure system. (CH4(g) + 2 O2(g> --> CO2(g) + H2O (l) ,delta H = -890 kJ.
Which of the following statements about free radicals is true? Free radicals are considered good because they are good oxidizing agents.
What is the pressure exerted in the closed end of an apparatus if the atmospheric pressure is 720 torr and the height of the water column is 22.3 cm?
at 25 degrees Celsius, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 65 grams of glucose in 150 grams of water?
Determine how many grams of copper sulphate are there in 219 grams of an aqeous solution that is 20.2% by weight of copper sulphate?
What is the internal energy of an ensemble of 1 mole of particles having two non-degenerate electronic energy levels separated by 1000cm^-1 at 1310K?
256 grams of sodium chloride reacts with an excess of calcium oxide. How many grams of sodium oxide are produced?
When a metal was exposed to light at a frequency of 3.94× 1015 s-1, electrons were emitted with a kinetic energy of 5.80× 10-19 J. What is the maximum number of electrons that could be ejected from this metal
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