Explain why the pH scale is a convenient tool to measure the acidity or basicity of a substance.

The definition for acids and bases provided in the introduction to this experiment is called theBronsted-Lowry formulation. Another formulation, that of Arrhenius, defines an acid as a speciesthat supplies H+ to solution and a base as something that supplies OH- to solution. Whichexplanation is more inclusive than the other, and why?

23. Consider the following experiment. Pick a random integer from 1 to 10¹².

    1. (a) What is the probability that it is either a perfect square (1, 4, 9, 16, ...) or a perfect cube (1, 8, 27, 64,...)?

    2. (b) What is the probability that it is either a perfect fourth power (1, 16, 81, 256, ...) or a perfectsixth power (1, 64, 729, 4096,...)?

In an experiment, 20.00 mL of 0.30 M acetic acid is titrated with 0.30 M NaOH. What is the pH when the following volumes of NaOH is added? Ka for acetic acid is 1.8 x 10^-5. Show work with ICE table.

a)5mL of NaOH added

b)20mL of NaOH added

c)35mL of NaOH added

A food engineer stated that the milk sample he analyzed in the laboratory was “FRESH MILK” in terms of acidity; reported that the concentration of non-sodium hydroxide base used in the experiment was 4 times higher than normal, and the sample analysis amount was used at the standard value.According to this information, how many microliters of base did most people use in the analysis?

What is Faraday’s Law? What two things does it relate?

What is Lenz’s Law? What does it conserve?

In the early 1830’s physicist Michael Faraday discovered magnetic induction. In his experiment, emf was induced in a coil of wire by a bar magnet. What did Faraday observe when the magnet is at rest and when it is moving?

Alcohol is made in sealed containers (no O2). BRIEFLY discuss how Energy is created in EACH of the Three Cycles that would occur if the yeast containers were left open to air for the entire experiment. Do Not explain it using terms like “Aerobic/Anaerobic” or “Cellular Respiration/Fermentation”. Do not explain fermentation or discuss what yeast “Would Not Do”.

1. You are performing a separation experiment with gas chromatography and notice that your peaks have overlapping elution times. Provide three possible approaches you could take to improve the resolution of the peaks. Explain how these changes would provide a higher resolution using the resolution equation. Which of your listed approaches would be the most cost effective?

"SUMOylation and ubiquitination reciprocally regulate α-synuclein degradation and pathological aggregation"

Take a look at Figure 3A. What would be the problem with the experiment if the band for actin were increasing in each lane of the gel (from left to right)? Would you be able to make any conclusions about the effects of PIAS on alpha-synuclein in this case? Why or why not

A solution is 0.022 M Ca(NO3)₂ and 0.005M AgC₂H₃O₂. K₂CO₃ is chosen in a fractional precipitation experiment.

A) Which ion will precipitate out first?

B) What is the minimum K₂CO₃ concentraion required to trigger the precipitation of the first ion?

C) What % of the first ion has been removed by the time the second ion starts to precipitate?

a) Describe how you could determine quantitate (determine how many) E. coli cells have been transformed?

b) Briefly outline your experiment. You will need a control, or standard, to analyze your experimental results, make sure to indicate this in your answer – explain what the control/standard is and how you use it.