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500.0 mL of 0.120 M NaOH is added to 595 mL of 0.250 M weak acid (Ka = 2.95 × 10-5). What is the pH of the resulting buffer?
The natural uranium/lead "clock" technique can be used to estimate the age of rocks. assume that at the time of solidification from the molten state a rock contained the radioactive isotope uranium-238. U-238 decays to a stable end product, lead-2..
for ammonia, Kb is 1.8*10^-5, to make a buffered solution with pH of 10.0, the ratio of [NH4+] to [NH3] must be
An iron bar of mass 781 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
What is the final dilution obtained after each dilution series shown below
Trimyristin can be synthesized from glycerol and tetradecanoic acid in 87% yield. If 25.00 g of trimyristin is needed, what amount of both starting materials (in grams) would need to be used in order to provide the needed amount of trimystin?
compare the masses of potassium hydrogen phthalate 204.22gmol potassium hydrogen iodate 389.91gmol and benzoic acid
what mass of the hydrate could be recovered from the solution? when separated from a h2o solution copper sulphate forms
You are carrying out tlc with a mixture of two compounds A and B. A is less polar than B. On a REVERSE PHASE plate
A.The molar heat capacity of silver is 25.35j/molc . How much energy would it take to raise the temperature of 11.4g of silver by 16.6c? B. what is the specific heat of silver
In which of the compounds/ions listed is the octet rule impossible to satisy for all atoms in the formula. Choose "Impossible" or "Possible" in regards to satisfying the octet rule
Diethyl ether is a volatile liquid, that is used in many solvents. The vapor pressure of diethyl ether is 401 mmHg at 18C. Calculate its vapor pressure at 29C.
How would you prepare 350. ml of a 0.1 M solution of NaOH from pure pellets. From 95% pure pellets
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