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When relatively small amounts of magnesium burn, the fires are extinguished using commercially available dry powder. Why might this fire rekindle days later as someone tries to remove the residue with water? What chemical process is involved here?
A gas at 439 K occupies 5.98 L at a pressure of 1.38 atm. What will its pressure (in atm) be at 228 K if its volume is reduced to 4.40 L
It takes 55.0 J to raise the temperature of an 8.80 g piece of unknown metal from 13.0C to 25.0C. What is the specific heat for the metal? Express your answer numerically, in J/g. C
what is the freezing point of solution made up of 54.9 g of NaCl dissolved in 800 g of water
how many moles of calcium chloride, cacl2, can be added to 1.5 liters of .020 M potassium sulfate, k2so4, before a precipitate is expected? assume that the volume of the solution is not changed significantly by the addition of magnesium sulfate.
What is the maximum number of moles of KClO3 that could form in the combination of 6.0 moles of Cl2 with 9.0 moles of KOH? Balanced equation is 3 Cl2 + 6 KOH goes to KClO3 + 5 KCl + 3H2O
In the synthesis of Aspirin using salicylic acid and acetic anhydride, i need a side equation for a reaction that might form salicylic acid during the workup of the product instead of acetic acid.
A compound is known to contain 51.27% carbon and 27.30% oxygen by mass. Each molecule contains two atoms of oxygen. What is the molar mass of this substance
What is the theoretical yield of ammonia in grams that can be prepared from 41.0 g of nitrogen and excess hydrogen
What mass of sucrose should be combined with 541 of water to make a solution with an osmotic pressure of 8.30 at 295 ? (Assume the density of the solution to be equal to the density of the solvent.)
An electric current is passed through an aqueous solution of LiBr. Use the Standard Potentials Table at the end of this assignment. a. What is produced at the anode. b. What is produced at the cathode
Why is the resonance energy of pyrrole (21 Kcal/mol) greater that the resonance energy of furan (16 kcal/mol)
Which of the following factors does not affect the velocity of an enzyme catalyzed reaction
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