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Draw elctron dot structures for the following elements. Na, Al, Cl Ar. Which are the most chemically reactive? Which are the leastchemically reactive?
The heat of fusion of ice(the heat associated with ice melting) is 6.0 kJ/mol. Find the temperature of the coffee after the ice melts.
What is the final volume of the balloon. Assume that the pressure inside and outside the balloon has the same value. Ans. V = 34.8 L
a 21.496 g sample of magnesium is burned in air to form magnesium oxide and magnesium nitride. when the products are
Using the balanced equation: 2NaCl(s)+ 1H2SO4(aq)= 2HCl(aq)+1Na2SO4(aq) a. If 20. G of NaCl are used, and only 5.6 g of HCl are isolated, what is the percent yield of HCl? b. If only 5.6 g of HCl are obtained, how many grams of Na2SO4 must also ha..
A mixture of 70 mole% propane and 30 mole% hydrogen is burned with 30% excess air.
In Organic lab we are enabling trans to cis isomerizaton of E-1,2-dibenzoylethylene by irradiating the alkene with UV light.
You want to produce a mixture containing 19 wt% NaCl. Find the volume of the second feed solution.
If a gas cylinder has a pressure of 2250 psi at 25 C, what is the pressure in the same gas cylinder at 40 C
Note that the absolute stereochemical configurations of chiral substances cannot be determined from the data. Arbitrarily draw a configuration for an enantiomer (and be consistent with the derivatives); omit wedge/dash bonds for a racemate.
In what ways are the mechanistic features of trypsin, chymotrypsin, elastase similar. If the mechanisms of these enzymes are similar, what features of the enzyme active site dictate substrate specificity
For cell with hydrogen and silver-silver-chloride electrodes, the cell potential was measured at 0.342V at 298K. Calculate the mean activity coefficient for HCL if the molality of the solution is 0.2 m.
a solution of 0.20 m of magnesium sulphate mgso4 has an observed osmotic pressure 7.6 atm at the temperature of twenty
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