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Question- 1) What are the 2 net ionic equations for when Mn^2+ gets NaOH added, NaClO added, and finally NH3 added?
1a.
1b.
2) What is/are the net ionic equations for when Cr^3+ gets NaOH added, NaClO added, and finally NH3 added?
3) What is the net ionic equation for when NH4SCN is added to Co^2+ to get Co(SCN)4 ^2-
Explain the each step. Explain the process and each step.
Calculate (a) the work done when the gas expands isothermally against a constant external pressure of 200 Torr until its volume has increased by 3.6 dm3, and (b) the work that would be done if the same expansion had occurred reversibly.
15.0 moles of gas are in a 7.00 tank at 20.0. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a = 2.300L(squared).atm/mol(squared) and b = 0.0430 L/mol.
Calculate the standard enthalpy of the reaction, \Delta {{H}^\circ}_{\rm rxn}, for the thermite reaction: \rm 2Al(s) + Fe_2O_3(s) \rightarrow 2Fe(s) + Al_2O_3(s)
PbCl_4_ solution reacts with 20.0 mL of (NH_4)_SO_4_, what is the molarity of the (NH_4)_SO_4_?
When 28 mL of a 430 mL stock solution containing 2.3 M AlCl3 is diluted to 114 mL, how many moles of Al3+ are in the new solution?
Raw milk sours in 4.0 hours at 28 degrees celcius but takes 48 hours to sour in a refrigerator at 5 degrees celcius. Calculate the activation energy for the souring of milk?
Problem- Part a) Sketch the molecular orbital diagram for O2- and determine whether the ion is paramagnetic or diamagnetic and label the HOMO and LUMO.
A student reacts 0.3000 grams of a sulfate-containing unknown with excess barium chloride. If 0.6500 grams of barium sulfate is produced, what is the percentage sulfate in the unknown?
Arrange the descriptions in order of increasing number of microstates in the resulting system.
Two samples of calcium fluoride are decomposed into their constituent elements. The first sample produced g of calcium and g of fluorine. If the second sample produced 294mg of fluorine, how many g of calcium were formed.
The solubility of air in water is approximately 2.1 x 10^-3 M at 20 degrees C and 1.0 atm. Calculate the Henry's lay constant for air. Also, is the K(H) value of air approximately equal to the sum of the K(H) values of N2 and O2 because these two ..
mixed 14.5 mL of a .500 M sodium flouride solution with 15.6 mL of a .750 M hydroflouric acid solution the measured Ph was 3.24. Calculate the pKa.
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