When a weak acid (HA) is titrated with NaOH (a strong base),
(a) what species are present in the weak acid solution before the titration is started?
(b) what species is/are decreasing during the titration?
(c) what species is/are increasing during the titration?
(d) what species is/are not involved in the reaction?
(e) what is meant by the equivalence point?
(f) what important species concentration increases after the equivalence point?
How do you calculate the sample mean of the differences?
How do you know which inequality symbol (less than or greater
than) to use when setting up your claim? (I.e. When do you test if
the difference between the matched pair data is less than zero?
When is the difference greater than zero?
Which distribution is used for testing a claim about dependent
samples?
Which are examples of equilibria? Which are chemical? Which are
physical? How would you know they reached equilibrium?
Vaporization & condensation of water
Conversion of oxygen gas (O2) to ozone gas
(O3)
Dissolving & crystallizing of sugar
How to tell whether a substance is an acid or a base depending on its chemical formula. I know that it depends on how it dissociates; a chemical is an acid if it dissociates into a H+ and a base if it dissociates into a OH-.
But how do you know what it dissociates into? How do you know that HNO3 dissociates into H+ and NO3- making it an acid?
How do you know that CH3NH2 is the base and...
What does statistical significance mean? How do you know if
something is statistically significant? What is the difference
between statistical significance and practical significance?
I dont know what to do: Is there a significant difference
between drug type and mean relative-change* of Cholesterol from
screening to follow up?
* Relative Change = (Follow up - Initial) / Initial
Patient ID
Drug
Stomach Pain
Sex
Age
Height
Systolic BP
Diastolic BP
Exercise
Coffee Consumption
Alcohol Consumption
Weight
Weight3
Cholesterol
Cholesterol3
Triglycerides
Triglycerides3
HDL
HDL3
LDL
LDL3
1
B
Yes
F
22
67.13
124
78
180
1
> 2
138
145
197
182
152
135
43...
BUFFER PROBLEMS
3. Start with either the conjugate acid or base and add a strong
base or strong acid (conjugate acid plus strong base forms the
conjugate base and water; conjugate base plus strong acid forms the
conjugate acid): What is the pH of 0.5 L of a 0.1 M acetic acid
solution to which 0.73 g of NaOH are added? The pKa of acetic acid
is 4.76.
I know what an Electrolyte and a non-electrolyte is, but how do
I relate the number of particles in a given solution to the type of
solute (electrolyte or non-electrolyte).