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In organic chemistry reactions we use a lot nucleophils and electrophils, what is the difference between them? and is there any compounds that can be nucleophils and electrophils at the same time?
What is the molality of a solution of aluminum nitrate that contains 31.0 g of Al(NO3)3 dissolved in 295.0 g of water? Use molar masses with at least as many significant figures as the data given. What is the molality of each of the ions in soluti..
Suppose that 1.252 g of impure barium hydroxide is dissolved in enough water to pro- duce 213.4 mL of solution and that 64.3 mL of this solution is titrated to the stoichiometric point with 29.5 mL of 0.0318 M HCl(aq). What is the percentage purit..
Acetylene gas (ethyne; HC=CH) burns in an oxyacetylene torch to produce carbon dioxide and water vapor, and the heat needed to weld metals. The heat of reaction for the combustion of acetylene is -1259 kJ/mol.
Question- For light of wavelength 589nm calculates the critical angles for the following substances when surrounded by air: (a) fused quartz, (b) ice, and (c) sodium chloride.
One mole of a gas obeys van der waals equation of state that is permissible to expand isothermally from v1 to v2. Compute ΔA for one mole of ammonia from 0.5 to 10 liters at 300k.
how much ice in grams would have to melt to lower the temperature of 358 g of water from 40 degrees to 0 degrees?
Calculate the Total Cell Number, You are given a 500ml culture of Euglena from which a 1 ml sample is taken and put in 49 ml of water. Absorbance was measured on this sample but the reading was off the scale
Starting with butyramide as your only source of carbon, make butyl butyrate.
The active ingredient in Pepto-Bismol is bismuth subsalicylate, C7H5Bi04. Anslysis of a 1.500-g sample of Pepto-Bismol yeilds 346 mg of bismuth. What percent by mass is bismuth subsalicylate
traces of iron and titanium. If the sapphire were found to contain 0.155 g of oxygen, what is the mass of the gemstone?
What will happen when a HCl (aq) solution is added to a Na2CO3 (aq) solution? Explain and give the molecular and net ionic equations for the reaction.
Why is the injector/detector temperature set at 180 C while the column temperature is only at 90 C and why is it possible to inject the sample directly with a syringe onto the top of the column in GC but not HPLC
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