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A 0.1276-g sample of a monoprotic acid (molar mass=1.10x10^2) was dissolved in 25.0 mL of water and titrated with .0633 M NaOH. After 10.0mL of base had been added, the pH was determined to be 5.77. What is the Ka for the acid?
When relatively small amounts of magnesium burns, 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 about formation of a monobrominated alkane -- from an alkene. What sort of addition reaction (see the list of possible reagents in section 4.6 (12.6) does give a monoborminated alkane, when reacting with an alkene.
One of the ways catalysts increase reaction rates is by A. Providing a surface for the reaction to occur. B. Increasing the activation energy requirement of the reaction.
Describe the reactant and products of the chemical reaction. Was the reactant (potato chip) completely consumed? What evidence supports your answer?
During the experiment of an acid catalyzed dehydration of a secondary alcohol, an elimination reaction (E1) is experienced, and a gas chromatography is performed.
Scientist A makes the suggestion that there exists a one-dimensional system for which the wavefunction psi (x) has the form psi (x) = N tan (ax) for x greater/equal than 0 and x smaller/equal than infinity
Draw products A through E for the following series of reactions. If both ortho and para product would form, continue on only with the para product, but mention that ortho would also be a product.
What mass of sodium cyanide must be added to 250ml of water in order to obtain a solution having a pH of 10.50? Ka(HCN) = 4.9 x 10 ^-10
The pressure exerted by 0.100 mol of an ideal gas enclosed in a rigid container at 50.0 degree C is 5.00 atmospheres. If the temperature of the container is increased to 100.0 degree C, what is the new pressure of the gas? the answer is 5.80 atm
What is the rate constant of a first-order reaction that takes 8.50 minutes for the reactant concentration to drop to half of its initial value?
For the reaction Na2CO3(aq)+2HCl(aq)= 2NaCl(aq)+CO2(g)+H2O(l), suppose you have 100 mL of 3.80M Na2CO3. How many milliliters of 0.920 M HCl would you have to add to the sodium to consume the Na2CO3 completely
a assessor is measuring the perimeter of a rectangular lot. he measures two adjacent sides to be 50.11 plusmn 0.05 m
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