Explain at what volume of mcacl2 must be added
Explain at what volume of 0.248 MCaCl2 must be added to 335mL of 0.186 M KCl solution in order to form a solution with a concentration of 0.250 M Cl^-1?
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Find out an expression for probability of overbooking a particular flight with 300 seats, when the number of tickets sold by airline company is equal 300 + m for some positive integer m.
Write complete ionic, molecular and net ionic equations for the reactions that occur, if any, when solutions of the following substances are mixed:
A damped mass-spring system oscillates at 113 Hz. The time constant of system is around 9.5 s. At t = 0 the amplitude of oscillation is 5 cm and the energy of oscillating system is around 86 J.
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The Heldrich Center for Workforce Development found that 40% of Internet users received more than 10 e-mail messages per day (USA Today, May 7, 2000). A similar study on employ of e-mail was repeated in 2002.
Determine the numbers of grams of anhydrous K2HPO4 (MW 175 g/mole) are needed to make 3Liter solution that contains 0.4 N K+?
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Determine the numbers of grams fo Ca3(PO4)2 are needed to prepare 480 ml solution, in which PO4-3 concentrations is 0.25 N. The molecular weight of Ca3(PO4)2is 310 g/ml?
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