Let's say I wanted to test the following data set: 0.043, 0.056, 0.073, 0.059, 0.050, and 0.051. Should I consider discarding any numbers? How would I know?
What is run a Grubbs test on 0.073?
100
0.5 M of NaOH will produce how much [OH-]?
What is 0.5 M?
100
A Brønsted-Lowry acid (definition).
What is a proton donor?
100
NH4Cl and _____ could be used to prepare an effective buffer solution.
What is NH3?
200
Solve: 923 g divided by 20 312 cm3 = ?
What is 0.0454g/cm3?
200
Let's say I want to compare two data sets. One has a mean of 53 and a standard deviation of 15, the other has a mean of 45 and a standard deviation of 9. What kind of test can I do to find out if I can do a t-test on this data and what do we have to test?
What is an F-test on the variance?
200
0.1 M HCl will produce what concentration of H3O+?
What is 0.1M?
200
What is the conjugate base of HPO4^-2?
What is PO4^3–?
200
True or false: Any acid/conjugate base system can act as a buffer.
What is false; strong acids and conjugate bases do not work as buffers.
300
Solve: 345.009 g - 23.009 g = ?
What is 322.000.
300
If I have a data set of 10 numbers, how many degrees of freedom does the data set have?
What is 9?
300
What is the pH of a 0.0200 M aqueous solution of HBr?
What is 1.7?
300
The stronger the acid, the (stronger/weaker) the conjugate base.
What is weaker?
300
If the pH of a citrate buffer is 4.7 and [citric acid]=0.15 M and [sodium citrate]=0.15 M, what is the pKa of citric acid?
What is 4.7?
400
The part of a logarithm that follows the decimal point.
What is the mantissa?
400
If I am 95% sure the true mean lies within a certain range, I can report that range as this.
What is a 95% confidence interval?
400
If the pOH of a solution is 8, what is the pH?
What is 2?
400
For a conjugate acid-base pair, Kw = Ka ___ Kb.
What is x?
400
The first pKa of H2SeO3 is 2.46. If used as a buffer, what would an effective range be?
What is approximately 1.46-3.46?
500
How many sig figs will be after the decimal place of log(2.73x10^-5)?
What is 3?
500
If I want to compare two means, what kind of test can I run?
What is a t-test (comparing two means)?
500
I have a 1 L solution of 2 M HCN, at a pH of 5. If I add 6 ml 5x10^-8 M HCl, what will happen to the pH?
What is not much, there is very little HCl.
500
Which is more acidic: a molecule with a Ka of 10^-5 or a molecule with a Kb of 10^-3?
What is Ka 10^-5 ?
500
For HCN, pKa = 9.3.?[HCN] = 1.00 M, [KCN] = 0.100 M,?pH of buffer solution = _____.