CHEMISTRY
This page lists questions and answers that were posted by visitors named CHEMISTRY.
Questions
The following questions were asked by visitors named CHEMISTRY.
PartA: Ammonia,is a weak base with a Ka value of 1.8x10^-5 .What is the pH of a 0.22M ammonia solution? PartB: What is the percent ionization of ammonia at this concentration? I got the answer for PartA which is pH=11.3. but i cant slove PartB..HELP!!!
16 years ago
The average human body contains 5.30L of blood with a Fe2+ concentration of 2.30×10−5M . If a person ingests 11.0mL of 15.0mM NaCN , what percentage of iron(II) in the blood would be sequestered by the cyanide ion?
16 years ago
A solution of Na2CO3 is added dropwise to a solution that contains 1.34×10−2M Fe^2+ and 1.33×10−2M Cd^2+ . What CO3^2- concentration of is need to initiate precipitation? Neglect any volume changes during the addition.
16 years ago
name the element wsith the atomic number z= 15 and the atomic mass number 31. How many electrons does the neutral of this lement have? How many neutrons does the neutral atoms of this element have? I know the element with the atomic number of 15 and atomi...
14 years ago
What is the number of "UNBOUND" electrons in H2O...its not 0 or 2....is it 1??
14 years ago
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.870 M, calculate the equilibrium concentrations of the gases.
13 years ago
H2SO4+NAOH=NA2SO4+H2O
4 years ago
Answers
The following answers were posted by visitors named CHEMISTRY.
I converted CN^- to moles iron(II)which is 2.75*10^-5, and initially 1022*10^-4 mols of Fe(II) were present. now i don't get the next step ..
16 years ago
correction: initially 1.22*10^-4 mols of Fe(II) were present
16 years ago
NVVVMMMM its 4
14 years ago
BARIUM IODATE CAN BE DISSOLVED IN WATER.
14 years ago