Lyna

A motorist drives north for 30.0 minutes at 62.0 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 1.90 h. (a) What is his total displacement? (b) What is his average velocity?

A street lamp weighs 150 N. It is supported by two wires that form an angle of 100° with each other. The tensions in the wires are equal. (a) What is the tension in each wire supporting the street lamp? (b) If the angle between the wires supporting the st...

Estimate the solubility of TISCN in a solution of which ionic strength is 1.265e-2M at 25 degree and Ksp=1.6e-4. I do not know why Prof. gives me ionic strength? In the next question, Prof. said " For a sparingly soluble ionic compound of type AB the solu...

Thank you DrBob222. My activity of Ti is 0.8661 and SCN is 0.8896. I do not know any equation between activity and solubility. Can you help me with that? Thank you

Thank you DrBob222. Yes, 0.8661 and 0.8896 are activity coefficients. That is my bad. Thanks to your suggestion, I already figure out the solubility of TISCN is 0.01425. Besides, the solubility would be 0.01265 if I applied the formula S=Ksp ^(1/2). What...

Thank you for your help. I think the differences between my question and the question that you sent me is that: mine is the mixture of H3PO4 and CaCl2 while the other is just dissociation of H3PO4. For b) I just write H3PO4 + H20 -> H2PO4- +H3O+ H2PO4- +H...