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What techniques might you employ to induce crystallization if no crystals have formed after you cool the solution to room temperature? (select all that apply)
a)add more solvent
b) scratch the inside of the container gently with a glass stirring rod
c)cool the solution in an ice/water bath
d) pour out some of the solution
e) perform a hot gravity filtration
What is the composition of anti-dust chalk? What are differences between normal blackboard chalk and anti-dust chalk? What made anti-dust chalk anti-dust? Explain in details.
earlier, lower-energy TS. Can model reaction coordinate as inverse parabolic potential well. What happens when we make X a better leaving group? Model by tilting entire plot forward. What happens when we make X a better leaving group?
Using the information from question 1, what are the stoichiometric coefficients for the reactant and products if you leave water as the last product
A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 161 J of heat from the surroundings. Calculate the change in energy of the gas.
Which of the alkaline earth metal hydroxides, M(OH)2, would you expect to be most soluble in water? Least soluable?
Propane burns in oxygen to produce carbon dioxide and water. c3h8 +5o2 yeilds 3co2 +4h2o Calculate the math of co2 that can be produced if reaction of 44g of propane and suficient oxygen has a 60% yeild.
how many grams of potassium permanagate are needed to discolor 1 gram of 2-pentene in basic solution.
How many L of H2 gas (at STP) is produced from 470 mL of 0.36 M HCl and excess Zn? The reaction is: Zn + 2HCl = ZnCl2 + H2
The equilibrium lies far to the right. The reaction will proceed very slowly. The reaction contains significant amounts of products and reactants at equilibrium. The equilibrium lies far to the left.
A weak acid HX has Ka = 1.00×10-6. What would be the pH of a 0.10 M solution of HX in water?
A metal cube having a mass of 112 grams is dropped into a graduated cylinder containing 30.00 mL of water. This causes the water level to rise to 39.50 mL.
Consider the titration of 50.0 mL of 0.217 M HN3 (Ka = 2.6 x 10-5) with 0.183 M NaOH. Calculate the pH of the solution after the addition of 29.6 mL of NaOH solution.
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