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The changes in the chromatograph resulting from changes in mobile phase composition (not all observed change are easily explainable-just explain what u can, in particular the general change to longer or shorter elusion times for all analyses. H20 is considered to be more polar than acetonitrile
This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 is desired. How many grams of CaH2 are needed to generate 16.0 L of H2 gas if the pressure of H2 is 750. torr at ..
What are the required steps in the synthesis reaction of tert-butanol only using Ethanol (CH3CH2OH) and Methane (CH4)
what is the term for a solution whose concentration has been accurately determined usually three or four significant digits? normal solution standard soluatoin stock soluation
based on molecular structure arrange the following sets of oxyacids in order of increasing acid strength.hclo3 hio3
Calculate the observed rotation for a solution of a substance (2.0g/mL) that is 80% optically pure. A 2-dm cell is used. The specific rotation for the optically pure substance is +20o.
(a) What is the pH of this buffer (b) What is the pH of the buffer after the addition of 0.48 mol of NaOH. (assume no volume change) (c) What is the pH of the original buffer after the addition of 0.23 mol of HI. (assume no volume change)
an unknown rectangular substance measures 3.6 cm high 4.21 cm long and 1.17 cm wide. if the mass is 21.3g what is this
How did the Dulong-Petit law fail to reproduce heat capacities of monatomic metals at low temperatures and how did Einstein explain and rectify this failure
The first thing you are asked to do in lab is record the ambient temperature. Why is it necessary to know the temperature
Predict the products for the following set of reactants- PCl3(l) + H2O(l) ? (You are just asked to determine the products and not necessarily balance the equation)
sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 551g of NaOH (s) per liter of solution. Calculate the molarity of this saturated NaOH (aq) solution.
Check out the structure and pertinent physical properties of THF versus diethyl ether. What necessitated the use of THF?
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