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depending on temperature, RbCl can exist in either the rock-salt or cesium-chloride structure. What is the coordination number of the anion and cation in each of these structures?
Draw all possible isomers for the molecule having the formula C7H7C1. The molecule contains one benzene ring.
A gas sample containing 1.64 mol at 25°C exerts a pressure of 389 torr. Some gas is added to the same container, and the temperature is increased to 50.°C.
A solution contained KIO3 and excess KI. 25 cm3 of this solution were acidified and the liberated I2 required 26.8 cm3 of 0.1 M Na2S2O3 for complete recaction.
a)Calculate the theoretical yield of when 109g of C2H6 reacts with 228g Cl2 of , assuming that and react only to form C2H5Cl and HCl .
What is the heat change in J associated with 74 g of gaseous butane at 91 oC changing to solid at -170 oC? c(butane) (gas) = 2.31 J/ (g.K) c(butane) (liq) = 1.65 J/(g.K) c(butane) (s) = 1.32 J/ (g.K) ?Hfus(butane) = 6.885 kJ/mol
Calculate the pH of the solutions having the following [H+]: a) 0.57 M pH=? b) 1.84 M pH=? c) 3.7*10^-5 M pH=?
If a piece of aluminum with mass 3.90 g and a temperature of 99.3 degrees celcius is dropped into 10.0 cm cubed of water at 22.6 degrees celcius, what will be the final temperature of the system?
what is the quantity in grams of formic acid and sodium formate necessary to make 500 mL of a buffer that has a formic acid concentration of .75 M and a sodium formate concentration of .75 M?
Calculate the number of grams of alcohol present in 1.00 L of 87 proof gin. The density of ethanol is 0.798 g/mL.
Two charged dust particles exert a force of 4.7 10-2 N on each other. What will be the force if they are moved so they are only one fifth as far apart?
what is the dosage of quinine when a 170lb adult takes a 400.0 mgtablet? Express in ug quinine per kg of body weight.
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g)
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