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(a) What is the difference between a straight-chain and branched-chain alkane?
(b)What is the difference between an alkane and an alkyl group?
a solution of 0.90 g of an unknown nonelectrolyte in 300 ml ofwater at 27?c has an osmotic pressure of 38.4 torr.what
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
A sample of oxygen gas () was found to effuse at a rate equal to three times that of an unknown gas. The molecular weight of the unknown gas is __________ g/mol.
What are some carbocylic reactants and what do they react with?
When coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), which is responsible for the acid rain phenomenon. S(s) + O2(g) ? SO2(g) If 2.31 kg of S are reacted with oxygen, calculate the volume of SO2 gas (in mL) formed ..
write an equation for the reaction that takes place between hydrobromic acid hbr and ethylamine c2h5nh2 when aqueous
A 21.6 mL volume of 0.107 M NaOH solution, reaches the stoichiometric point in the titration of a 25.0 mL aliquot of nitrous acid, HNO2. What is the molar concentration of the HNO2 solution
Explain what is the coordination number as well as oxidation number of the central metal in each of the following
25.0 mL of a gas with a pressure of 1.00 atm is contained in a balloon at 25.0 C. The balloon is then cooled to 5.0 C, and the pressure is found to be 0.750 atm. What is the volume of the gas under the new conditions?
Calculate the theoretical ph of one of your buffer at 0^0 C. Assume that room temperature is 22^0 C. If none of your buffer is listed on the table of changing pka with temperature, do this problem for TRIS at ph 8.0.
what temperature should the tube be maintained to have a partial pressure of 1.0mm of O2 in the exit gas? Assume that the total pressure of the gas in the tube is 1.30atm.
Paracetamol is similar to asprin in that p-aminophenol is reacted with acetic anhydride and yet the amino group is acylated and not the hydroxy group. Why
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