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Which of the following is the better chemical for removing calcium ions from water. Make sure you show the calculations necessary to justify your answer. Ignore calcium complexes. a) NaOH b) K2CO3 c) K2SO4 d) KF
In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask.
give full mechanism: show the reaction of ethyl propionate with sodium ethoxide followed by cold aqueous acid work up
Determine the normal boiling point of a substance whose vapor pressure is 55.1 mm Hg at 35°C and has a Hvap of 32 .1 kJ/mol.
How much heat is evolved when 233 g of ammonia gas condenses to a liquid at its boiling point?
With acid-catalyzed condensation of a molecule with two aldehyde groups that is suitable for forming 5- or 6-membered rings, are both carbonyls protonated right away at the same time
a sample of 1.0 mole of a perfect gas with cp= 20.8 JK -1 is initially at 3.25 atm and 310 k. It undergoes reversible adiabatic expansion until its pressure reaches 2.50 atm. calculate the final volume and temperature and the work done
An electrophilic addition is? Answer . a) An addition to an alkene initiated by a nucleophilic attack. b) An addition to an alkene initiated by an electrophilic attack
HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in sufficient water to yield 1.00 L of solution
At 40°C, the vapor pressure of heptane is 92 torr. If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
Classify the substances according to the strongest solute-solvent interaction that will occur between the given substances and water during dissolution.
Cabbage water will spoil after a few days. How might you make a cabbage indicator with a longer shelf life? According to your cabbage water, what is the pH of baking soda, crushed aspirin, cleanser, garden lime, sugar and lemon juice?
What is the pH at the point during a titration when 22 mL of 0.200 M HCl has been added to 33 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3. Answer in units of pH
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