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When a piece of metal is irradiated with UV radiation (wavelength=162nm), electrons are ejected with a kinetic energy of 3.54x10^-19 J. What is the work function of the metal?
A bag of potato chips contains 580 mL of air at 25°C and a pressure of 755 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain
What is the theoretical yield of aspirin if 165 of salicylic acid is allowed to react with 111 of acetic anhydride?
What are the relative percentages of hydrogen cyanide (HCN) and cyanide ion in a dilute aqueous solution
What mass of NaCl is needed to react with 35.0 mL of the same AgNO3 solution?
Calculate how many moles of sodium phosphate are needed to react completely with 4.6 mol of calcium nitrate( Ca(NO 3 ) 2 ) to form sodium nitrate (NaNO 3 ) and calcium phosphate?
A sample containing 839g of water was cooled from 95°C to 27°C. How much heat was involved in this process? provide the answer in joules or kilojoules
Calculate the molar concentration of illinic acid and of its conjugate base illinate ion (in moles/L; M) in a 3 M illinate buffer at pH 7.5. The pKa of illinic acid is 6.7.
A sample of hydrogen gas collected at STP occupies a volume of 31.6 L. How many moles of gas does the sample contain? answer in mol please
Toxic cyanide ion, CN-, can be removed from wastewater by reacting it with hypochlorite, ClO-, in aqueous basic solution. The products formed are N2(g), bicarbonate, and chloride ion. What is the sum of the stoichiometric coefficients in the corre..
solution of Cl^- ions are reacted with 0.500 M solution of AgNO3. what is the maximum mass of AgCl that precipitates?
a line in the Balmer series of hydrogen has a wavelength of 434 nm from what state did the electron originate
A 12 kg block of ice has a temperature of -10.0 degrees celsius. The pressure is one atmosphere. The block absorbs 4.50 times 10 to the sixth power J of heat. What is the final temperature of the liquid water?
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