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A new solid Ni(II) octahedral complex has been synthesized containing only chloride and ammonia as ligands. Determine the exact formula of the compound. When 9.64x10-4 moles of this complex is dissolved into 425.0 mL of the water, you find that 19.22 mL of 0.1000 M HCl is needed to reach a titration endpoint. If not enough data is given, show what variables you would need to finish the problem as well. Make sure that your final formula contains the necessary counter ions to make a neutral salt.
In the following experiment, a coffee-cup calorimeter containing 100. of is used. The initial temperature of the calorimeter is 23.0 . If 6.80 of is added to the calorimeter, what will be the final temperature of the solution in the calorimeter
If heat is given off by a system then the heat has a negative sign If work is done on a system then the work has a negative sign Work, heat and temperature all have units of joules The 1st law of thermodynamics is represented
Barium peroxide decomposes when heated to give BaO and O2. Write the balanced equation for this reaction. How many moles of O2 is formed when 0.500 mole of BaO2 is decomposed
Determine the H3O+ concentration of a solution that has a pH of 8.75. Calculate the OH- concentration of a solution that has a [H3O+] of 3.5 x 10-10M.
Potassium manganate is a dark green, crystalline substance whose composition is 39.6% K, 27.9% Mn, and 32.5% O, by mass. What is its empirical formula. The molecular mass of potassium manganate is 197.13, what is the molecular formula
oxygen are required to react with 5.62 mol nitrogen to produce dinitrogen trioxide?
determine the volume of a cube 10,62 cm, give an example of four sets of measurements that illustrate an imprecise and inaccurate data
a solution of lactic acid, HC3H5O3, on a laboratory shelf was undetermined concentration. If the pH of the solution was found to be 2.51, what was the concentration of the lactic acid?
Compute the final pressure in the tank if nothing else is altered in the surroundings. (The two gases do not react)
Ethanol (C2H5OH) has a normal boiling point of 78.3 celsium and with DeltaHvap=39.3KJ/mol. What is the vapor pressure of ethanol at 50.0 celsium
How many grams of methane CH4 must be combusted to heat 1.15 kg of water from 24.0 C to 93.0 C, assuming H2O as a product and 100% efficiency in heat transfer?
Predict the electron-domain geometry, the molecular geometry, and the hybridization of the central atom. For each non ionic species, state whether it will be polar or nonpolar. a) SeO2 b) XeF4 c) PCL5 d) BrF2-
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