Find new ph when naoh is added to initial buffer solution
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?
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Copper 64 used to study brain tumors. assume that the original mass of a sample of copper 64 is 26.000g. after 64 hours all that remains is 0.8125g of copper 64. what is the half life of this radioactive isotope?
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)
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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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Which allows you to calculate the energy of the emitted light. What is the value of the constant needed to complete this equation?
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