pls help me
Which of the following rights is dependent upon whether formal charges have been filed or a criminal prosecution has begun? Answer the Fourth Amendment protection against unreasonable search and seizure the Fifth Amendment privilege against self-incrimination the Sixth Amendme...
A 13 foot ladder leaning against a wall makes an angle of degree radians with the ground. The base of the ladder is pulled away from the wall at a rate of 2ft/sec. How fast is degree changing when the base of the ladder is 5 feet way.
An arrow is shot into the air at a velocity of 25 m/s and an angle of 32 degrees above horizontal. It lands at the same level that it was shot from. How long is the arrow in air? How far does the arrow travel?
Which of the following was a problem faced by the average Chinese citizen during the Song dynasty? a.the shrinking use of the civil service exam and thus the lack of opportunity to obtain a government position b.the control of the Chinese treasury by northern invaders led to ...
On a hot day in summer, your friends decide to go rafting down a local river. Since you are afraid of water, your job is to provide them with refreshments from a bridge as they pass. When the first raft is 10 meters away, traveling at 3.5 m/s, you drop a can of soda, which la...
How to balance simple oxidation-reduction reactions by the half-reaction method. Mg (s) + N2 (g)= Mg3N2 (s)
I have a question regarding the titration curve. When the ph is equal pKa that mean there are equal amount of conjugate acid to conjugate base. When a weak acid dissociates for example H3Po4 H+ H2PO4- My problem: I dont understand how the ph rises after the halfw...
DrBob222 : need some clarification
Hi DrBob222, Could you please explain want you typed: *You must have 10 mmoles of that still un-titrated (you had 10 millimoles of the original and that is gone but you still have 10 mmols of the other acid remaining. Are you saying I have 10 mmoles of each acid, if so how did...
DrBob222 : need help with the problem
An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa of the second ionizabl...
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