simi
This page lists questions and answers that were posted by visitors named simi.
Questions
The following questions were asked by visitors named simi.
what is the sulotion on the story the mixed up files of mrs brasil e. frankweiler?
17 years ago
can anyone help me with this problem? a sample of n=9 indivividuals was selected from a normally distributed pop. with a mean of M=25 and a standard deviation of 6.a treatment was administered to the sample, and treatment , the nine individuals produced t...
15 years ago
Calculate the pH of the following salt solutions? 0.1 M HBr 0.1 M CaI2 0.1 BaF2 Kb (F-)=1.4x10^-11
15 years ago
a buffer is made by adding 150 ml of .595M BaF2 and 0f .500M of HF solution. calculate the pH of this buffer system calculate the pH of this buffer after adding .100 mol Hcl calculate the pH of this buffer after adding .0750 mol Ca(OH)2 ka(HF)= 6.9x10^-4...
15 years ago
Consider the titration of 20 mL of .105M Butric Acid HBut, with .125M sodium Hydroxide? calculate the pH before titration calculate the volume of added base to reach the end point calculate the pH halfway to the equivalence point kb(But-)= 6.6x 10^-10 and...
15 years ago
make sentences with words starting with alphabet a-z
15 years ago
A boat moves from a point A on the bearing 150¡ã to another point B 10km away.it then changes direction on being south 45¡ã east for a distance of 12km to another point C. 1.. How far is the boat from the starting. 2.. What is the bearing of C from A.
9 years ago
Answers
The following answers were posted by visitors named simi.
I understand how to get the pH before titration and how to get the volume. From my understanding to get the pH before titration i just multiply the ka and the weak acid concentration then i get the square root. I then get the negative log of the square ro...
15 years ago
i don't understand how to get CaI2
15 years ago
im confused on how to calculate the pH of this buffer after adding .100 mol Hcl ... i get negative numbers
15 years ago
oh yes i forgot to do the square root i get 2.9. so for the second one it would be 4.8 and the third one it would be 10.8 thank you so much for explaining it step by step i appreciate the help
15 years ago
i got ph= 3.24+log -7 b/c i did ph=3.24 = log .175/-.025
15 years ago
okay thank you so much this helped alot
15 years ago
what about the pH at equivalence point?
15 years ago
always be united
13 years ago
can anyone plz tell me ans 9..i am stuck with it..and my ans is coming wrong continously
12 years ago
read your books for the answer
8 years ago
it aint so hard. its actually like studing the environment you leave in. best wishes
8 years ago