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The heat of fusion of sodium metal is 630 cal/mol. How much heat (in kilocalories) is required to melt 179 grams of sodium?
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 77. Include any hydrogen atoms and the charge. The compound given is a cyclohexene with double bonds at every other one. It also has a chlorine coming off one of th..
you just need to find out Which Substance (given) will be to fall to the bottom of the beaker by combining them with H 2 O In A Beaker?
Enantiomers and Order of Elution, The enantiomers (R and S forms) of the following chiral alcohols need to be separated by a suitable CHIRAL SEPARATION method.
An aqueous solution of Na2CO3 has a pH of 10.00. The CO3-2 (carbonate anion) is the conjugate base of its conjugate acid, HCO3- (bicarbonate anion). Write the net ionic equation for the reaction which shows why the solution has a basic pH.
Calculate the theoretical yield of aspirin obtained when 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08 g/mL) 2. if 1.9 g of asprin were obtained in this experiment, what would be the percent yield
Which of the two ionic compounds, NaCl or CaCl2 has the larger lattice energy. Why
A student wants to prepare a dilute solution of iron (III) solution, . The student is provided with a stock solution of 0.800 +/- 0.001 M and a 100.00 +/- 0.008 mL volume trick flask since the experiment trquires about 80 mL of the dilute iron (II..
In some cases a Br-Br bond can be broken by the absorption of photons of light energy. Br-Br bond energy is 192 kj/mol determine the photon energy and the wavelength (in nanometers) associated with breaking this bond.
A zero-order reaction has a constant rate of 3.50×10-4 M/rm s. If after 65.0 seconds the concentration has dropped to 1.00×10-2 M, what was the initial concentration?
A 550 mL volume of hydrogen chloride gas, HCl, is collcted at 27 degrees C and 790 mm Hg. What volume will it occupy at STP?
How would you prepare a 25.0% water in ethyl alcohol solution using 100.0 ml of ethyl alcohol (the density of alcohol is 0.7893 g/ml)
Assume you dissolve 6.73 grams Na2CO3 in enough water to make 250 mL of solution. What is the molarity of the sodium carbonate?
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