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How many seconds does it take to deposit 1.63g Ni on a decorative drawer handle when 13.7A is passed thorugh a Ni(NO3)2 solution
A 5.00 L flask at 279 K contains a mixture of He and O2 with a total pressure of 1.00 atm. If the mole fraction of O2 is 0.40, what is the mass fraction of O2?
What is the percentage yield when 28.16 g of carbon dioxide is formed from the reaction of 4.00 moles of
How much alcohol must be burned to generate enough heat to warm 279kJ from 60 degrees fahrenheit to 180 degrees fahrenheit
What Mass of K2CO3 must you add to 125 grams of water to prepare a 0.200m K2CO3? What is the mole fraction of K2CO3 in the resulting solution?
The molar concentration of Tl+ is M (4 dec places). The molar concentration of Cl- is M (4 dec places).
It has a pressure of 46.3 mmHg and 24.6 C (degrees). what is the molecular formula og the compound
A bottle of 6 M acid has 34.3 mL remaining in it. If the acid is diluted to 770 mL, what is the new concentration of the acid.
A multivitamin tablet contains 40 milligrams of potassium. How many moles of potassium does each tablet contain?
A buffer is initially 0.180M in 4-nitrophenol (HC6H4NO3) and 0.200M in potassium 4-nitrophenolate (KC6H4NO3). The Ka of 4-nitrophenol is 3.8*10^-4 and the buffer has a pOH = 3.47. If 0.20g on NaOH were added to 100ml of this buffer what would the ..
Hydrogen cyanide is prepared from ammonia (NH3) and natural gas (CH4).2 NH3 (g) + 3 O2 (g) + 2 CH4 (g) → 2 HCN (g) + 6 H2O (g)
What is the [H30+] in the final solution after mixing 0.500 L solution of 0.100M HbrO4(aq) with 0.600L of 0.010M solution of NaOH
We have a refrigeration unit that works at a pressure of 0.1MPa in the evaporator and 1 MPa in the condenser. The refrigeration unit uses a compressor with an efficiency of 90% and a turbine with 100% efficiency is used to expand the refrigerant a..
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