Calculate the molar concentration
Calculate the molar concentration of {rm{OH}}^ - ions in a 6.7×10-2 {rm M} solution of ethylamine ({rm{C}}_2 {rm{H}}_5 {rm{NH}}_2 );(K_b = 6.4 times 10^{ - 4}).
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A rifle with a barrel length of 61 cm fires a 10 g bullet with a horizontal speed of 440 m/s . The bullet strikes a block of wood and penetrates to a depth of 15 cm .What resistive force (assumed to be constant) does the wood exert on the bullet?
The Standardized solution of NaOH is used to titrate a solution of HCI. Write the balanced equation for this reaction. Calculate the molarity of the HCI solution if it requires 13.50-mL of NaOH to titrate 15.0-mL HCI solution to the endpoint.
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A heavy ball with a weight of 100N is hung from the ceiling of a lecture hall on a 4.0 m--long rope. The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.6m/s as it passes through the lowest point What is the t
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