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A fish tank containing a number of exotic fish needs a pH of 5.0 , an indicator indicates the pH of the tank is 7.0. What should be done to the hydrogen ion concentration to set the tank to the correct pH.
At 25oC, a sample of milk of magnesia, used as an antacid, has a pH of 10.50. What is the [OH-] in this solution?
A sample of blood at 25oC has a pH of 7.34. What is the [H3O+] in this solution?
An aqueous solution at 25oC has [OH-] = 1.0 x 10-5 M. What is the pH of this solution?
An aqueous solution at 25oC has [OH-] = 5.0 x 10-10 M. What is the pH of this solution?
Which of the following solutions is basic?
i. [H3O+] = 2 x 10-8 M
ii. [OH-] = 2 x 10-6 M
iii. [H3O+] = 9 x 10-6 M
Trying to study for my final but kept getting stuck with these questions within a review packet.
calculate the concentration of arsenic in ppb in a 0.05 mgl solution. assuming that the solution is entirely water and
This would be as simple as how many went in and the net result, but my first 2 attempts were incorrect: (1,2,2,2 -->2,4,2) and (1,4,2,2 -->2,2,2) Please include a reason why knowing the # of Carbons in glucose and pyruvate is a hint.
a how much heat would be given off per mole of naoh if 4.6g of naoh dissolves to give off 755j of heat?b how many grams
Calculate the change in Gibbs free energy for each of the following reactions. In each case indicate whether the reaction is spontaneous under standard conditions.
A 65.00 mL sample of HNO3 solution is neutralized by exactly 34.16 mL of 0.5841 M Ba(OH)2. What is the molarity of the HNO3 solution?
What is the hydronium ion concentration of a 0.150 M hypochlorous acid solution with Ka=3.5x10^-8? The equation for the dissociation of hypochlorous acid is
The relationship between the temperature of a reaction, its standard enthalpy change, and the equilibrium constant at that temperature can be expressed as the following linear equation: In K = -ΔHo/RT + constant, Explain how this equation can be ..
The procedure calls for cautions addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reac..
if the pressure during the reaction stays CONSTAT (put the valune can change, like in a piston balloon which of these reactions do work on the surroundings
How many moles of sodium acetate must be added to 1.8 L of 0.25 M acetic acid to give a solution that has a pH equal to 4.68? Ignore the volume change due to the addition of sodium acetate.
There are 3 different possible structures for dibromoethene molecule, C2H2Br2.One of them has no net dipole moment, but the other two do. Draw a Lewis strucutre for each isomer. Include H atoms.
See that your water heater broke however you wanted to take a bath. You fill your bathtub with about 25kg of room temperature water (about 25 degrees C). You figure you can boil water on your stove to elevate the bath water temperature. Explain ho..
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