What is the ph of a molar solution of the base
The dissociation constant Kb, for the weal base methylamine,CH3NH2 is 4.4x10-4. What is the pH of a 0.080 molar solution of this base?
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You have to prepare a pH 3.60 buffer, and you have the following.10M solutions available: HCOOH, CH3COOH, H3PO4, HCOONa, CH3COONa,and NaH2PO4.
The manufacturer of a new antidepressant claims that, among all people with depression who use the drug, the proportion (p) of people who find relief from depression is at least 80%.
Find the z-score for the standard normal distribution where:
In 9.4 s a fisherman winds 2.2 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation). The line is being reeled in at a constant speed. Determine the angular speed of the reel.
A planet orbits a star once every 2.90 x 10^7 s in a nearly circular orbit of radius 1.66 x 10^11 m. With respect to the star, determine the tangential speed of the planet.
If kerosene at 68 degrees F is flowing and the deduction on a mercury-kerosene manometer connected to the pitot tube is 4 in., what is the velocity?
At the end point of titration of 25 ml of .3 M naoh with .2 M hno3 what would the concentration of sodium nitrate be answer is 6.41 x 10 ^ -15 and 1.56 * 10 ^ -2 but how?
A 0.18-kg ball is placed in a shallow wedge with an opening angle of 118°.. For each contact point between the wedge and the ball, determine the force exerted on the ball (There are two contact points). What is the contact force of one and two
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