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Explain what is the oxidation state of the transition metal in the coordination compound Co(NH3)3(SCN)2+? Is the subsequent compound typically used as an oxidizing agent or a reducing agent in aqueous solution?
HNO3
What is value of the activation energy, Ea, for this reaction. What is the value of the pre-exponential factor (sometimes called the frequency factor), A, for this reaction
Write the electron configuration of selenium. List the following compounds in order of increasing lattice energy: NaCl, NaBr, MgO, CaO.
what is the composition of wet gas. How can partial pressure of hydrogen gas be abstained from the total pressure of wet gas. From where will you obtain the necessary data to determine the pressure of hydrogen gas
in an experiment 99.0 g of aluminum with a specific heat of 900 jkgmiddotk at 93.0degc is mixed with 88.0 g of water
How many molecules of gas could be confined in 230 mL at a pressure of 740 mmHg and a temperature of 25 degree C?
Calculate the time to drain water at 20C from a vertical tank 1.7 m in radius from a depth of 13 m to 1.6 m through a 1 cm in radius pipe 12 m long connected vertically at the bottom of the tank. Take η = 1 cP where 1P = 1 g/(cm s)
An unknown volume of water at 18.2 degrees Celsius is added to 21.6 mL of water at 35.0 degrees Celsius. If the final temperature is 23.5 degrees Celsius, what was the unknown volume
Explain if a total of 13.5 mol of NaHCO3 and 4.5 mol of C6H8O7 react, how much moles of CO2 and Na3C6H5O7 will be produced
calculate OH for a solution formed by adding 5.80 mL of 0.190 KOH to 20.0 mL of 7.5×10-2M Ca(OH)2.
CaCl2 is used to lower the freezing point of water on streets and sidewalks. Assuming it forms an ideal ionic solution, how many grams of CaCl2 must be added to 1.50 kg of water to lower the freezing point of the mixture to -2.00* C? Kf for water ..
a solution of 0.90 g of an unknown nonelectrolyte in 300 ml ofwater at 27?c has an osmotic pressure of 38.4 torr.what
A solution of KHC2O4.H2C2O4.2H2O three replaceable hydrogens is 0.200 N as an acid. Define what is its normality as reducing agent
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