Determining the dilute solution
A 300 mL stock solution contains 0.9 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
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Given that the rate constant is 4.0×10-4 at 25.0 degrees C and that the rate constant is 2.6×10-3 at 42.4 degrees C, what is the activation energy in kilojoules per mole? Note that the value of the constant is R=8.3154 J/(mol*K)
A viscous incompressible newtonian fluid flows down a vertical wall. the liquid is exposed to atmospheric pressure and the liquid film thickness h is constant.
You apply a constant force F? =(-68.0N)i^+(36.0N)j^ to a 420kg car as the car travels 49.0m in a direction that is 240.0 ° counterclockwise from the +x-axis.
A 100 mL buffer solution initially has 1.00 M HClO (Ka = 3.0 × 10-8) and 0.75 M NaClO. What is the new pH when this 100 mL of 0.10 M NaOH is added to the initial buffer solution?
The probability that the student answers correctly on the second try given that he answered incorrectly on the first try is 0.3. Find the probability that the student answers the question on the first or second try.
What causes the current gain to decrease both in the case of a low collector current and at a high collector current? Why does breakdown occur at a lower voltage in the reverse case than in the forward case?
Which allows you to calculate the energy of the emitted light. What is the value of the constant needed to complete this equation?
A long wire of diameter D = 1mm is submerged in an oil bath of temperature T∞ = 25°C. The wire has an electrical resistance per unit length of R'e = 0.01 ?/m.
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