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What mass of this substance must evaporate in order to freeze 190 of water initially at 24? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
Draw a mechanism to demonstrate how pyridine catalyzes the hydrolysis of acetic anhydride to two molecule of acetic acid. Is this reaction reversible?
Molecular chlorine, Cl2, is a green gas. Sketch a few of the rotational, vibrational, and electronic energy levels of Cl2 on the same diagram to relative scale.
Calculate the pH of a solution that results from mixing 37.6 mL of 0.127 M ammonia with 48.3 mL of 0.119 M ammonium chloride.
Calculate the molarity of a solution of HBr if 34.80 mL of the HBr solution neutralize 0.834 g of Na2CO3. The following is the unbalanced equation for the reaction
Calculate the experimental percent by mass of copper in the sample and the theoretical mass percent of copper in copper (II) acetate monohydrate.
How does electron configuration work. If I have [Ar]3d^5 as an example how do know what it actually equals
what is the freezing point of solution made up of 54.9 g of NaCl dissolved in 800 g of water
what is the theoretical mass of xenon tetraflouride that form when 118. grams of xenon is reacted with 62.0 grams of flourine?
Calculate the amounts of Na2HPO4 and NaH2PO4 (in grams) needed to prepare 200 mL of a buffer with pH = 8.25 so that the sum of concentrations
The sodium hypochlorite reacts with hydrochloric acid producing chlorine gas. What is the reducing agent in this reaction
An aqueous solution is 13.0% by mass ethanol, CH3CH2OH, and has a density of 0.978 g/mL. The molality of ethanol in the solution is?
A solution that has a K+ concentration of 5.00ppm is to be prepared from solid KCl. Assuming a solution density of1.000g/mL how many miligrams of KCl must be added to make 1.00L solution?
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