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A compound contains only carbon, hydrogen and oxygen. Combustion of 7.30 mg of the compound yields 10.68 mg of carbon dioxide and 4.37 mg of water. What is the empirical formula of this compound?
If a sample of 0.190 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
Exactly 100 mL of 0.12 M nitrous acid (HNO2) are titrated with a 0.12 M NaOH solution. Calculate the pH for the following. (a) the initial solution
What is the gas pressure (in atm) inside a 2.43-L bulb that contains 2.88-g of Ne at a temperature of 32.9 C?
An ionic compound forms when aluminum (Z = 13) reacts with iodine (Z = 53). If a sample of the compound contains 1.23 x 1019 aluminum ions.
what relative masses of dimethyl amine and dimethyl ammonium chloride do you need to prepare a buffe
a dissolve 8g of ammonium iron iisulfate in 25cm3 of water that has been acidified with 1cm3 of 2m sylfuric acid.add
Calculate the amounts of C 7 H 8 , C 7 H 16 , and H 2 in the output stream express your answer (in mol s -1 ).
At 700 K the equilibrium constant for the reaction CCl4(g) C(s) + 2 Cl2(g) is Kp = 0.76. A flask is charged with 2.00 atm CCl4, which then reaches equilibrium at 700 K.
Assign oxidation numbers to all the elements in each of the following compounds or polyatomic ions: a)N2O b)LiOH c)SbO2^- d)IO4^-
This indicates that the unknown material is a pure compound? Not be a pure compound, suggest an alternate procedure to verify the purity of the sample
What new compound will be formed when gaseous HCL is added to a solution of benzaldehyde in methanol
A piece of metal with a mass of 151 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?
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