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How would the absorbance of the standard solution have been affected if 0.00050 M NaSCN had been used in place of 0.00040 M? if it changes, calculate the new absorbance based on your values.
a 1.00-l gas sample at 100.degc and 589 torr contains 50.0 helium and 50.0 xenon by mass. what are the partial
explain why covalent bonds are formed when non metals from the right side of the periodic table bond with each other.
the structures of the ions Ni2+ (aq) and Fe3+ (aq) as they exist in aqueous solution in octahedral shape.
Determine an aqueous solution of calcium nitrate added to an aqueous solution of sodium phosphate. State and balance the equation for this reaction to answer the following question. Explain what is the sum of the coefficients when the molecular eq..
A certain gaseous oxide of sulfur has an effusion rate that is 0.707 times the effusion rate of oxygen gas. What is the most likely molecular
What volume of 0.1066 M Na2S2O solution would be requried to react with 24.32 mL
phenol c6h50h is a weakorganic acid. suppose 0.515g of the compound is dissovled in exactly 125ml of water. the
What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=9 to n=2
calculate the volume of a sample of carbon monoxide at -21degc and 359 torr if it occupies 3.65 l at 298 k and 758
Question- If I have a solution of formic acid pKa=3.75, monoprotic and sodium formate, over what is the range of pH values in this mixture likely to resist pH changes
Problem- Determine the value of the equilibrium constant, at standard state, for the redox reaction shown Sn4+ (aq) + Ni (s) --> Sn2+(s) + Ni2+ (aq)
Problem- Calculate the binding energy (kJ/nucleon) for a Cu-63 nucleus. H-1 = 1.00785 g/mol, n-1= 1.008665 g/mol, Cu-63= 62.93960 g/mol.
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