In time of flight mass spectrometers, ion separation is achieved using a(n)….. and why?

A. Field Free Drift Tube

B. RF only collision cell

C. Combination high-pass and low-pass filter

D. Magnetic Field

Research and then claim an application where solar or nuclear power is used. (Please try to keep the numbers even in that if you see mostly solar power applications selected, then go for a nuclear application, and vice-versa). For the application, you selected tell us about it and how it’s employed. Include any advantages or disadvantages for using it with respect to nuclear power. Finally, for the videos you watched, identify two of what you thought were the most important advantages of using each energy source to power say, a city of one million. Include a statement about your own opinion of which you’d like to be used in the future.

The very useful restriction enzyme SpoBob hydrolyses the phosphodiester bond between the guanylates in the sequence AGGACCA. Is SpoBob generating blunt or sticky ends? Please explain.

What do you mean by pro-R and pro-S?

How does the Fluoride Ion-Selective Electrode it detect the fluoride ion? Include the species of fluoride that need to be considered, how to free the fluoride ion, and pH considerations.

1. What is the coordination number for each of the following complexes?

[Co(NH3)4Cl2]+

[Mg(EDTA)]2?

[Zn(H2O)4]2+

Na[Au(CN)2]

Enter the coordination numbers, in the order that the complexes are listed, as four integers separated by commas (e.g., 1,2,3,4).

2. What is the charge on each of the following complex ions?

hexaaquachromium(II), [Cr(H2O)6]?

tris(carbonato)aluminate(III), [Al(CO3)3]?

amminepentabromoplatinate(IV), [Pt(NH3)Br5]?

Express the charges numerically, in the order that the complexes are listed, separated by commas. For a nonzero charge, be sure to include the sign (e.g., +1,-2,+3).

3. What is the oxidation number of the central metal ion in each of the following complexes?

[NiCl2F2]2?

[Fe(H2O)2(NH3)4]3+

Na[Ir(CN)2]

Express the oxidation numbers numerically, in the order that the complexes are listed, separated by commas. For a nonzero oxidation number, be sure to include the sign (e.g.,+1,-2,+3).

For which of the following reactions is ?H?rxn equal to ?H?f of the product(s)?

You do not need to look up any values to answer this question. Check all that apply.

SO(g)+12O2(g)?SO2(g)

2Na(s)+F2(g)?2NaF(s)

Na(s)+12F2(g)?NaF(s)

S(s)+O2(g)?SO2(g)

Na(s)+12F2(l)?NaF(s)

SO3(g)?12O2(g)+SO2(g)

the Santa Ana winds are strong within Southern California. what drives this phenomenon?
(use thermodynamic quantities/concepts to explain)
Physical chemistry question

Capsaicin is the compound that makes hot peppers spicy. This compound reversibly binds to the same protein that detects heat in our bodies. For that reason, when we eat spicy food we experience a “burning” sensation. The spice level in different types of peppers is measured in Scoville units. A Scoville unit refers to the number of times a pepper extract has to be diluted in order for a panel of people to no longer detect the heat. For example, a Jalapeño pepper ranks about ~5000 units. This means that liquid extracted from a Jalapeño must be diluted 5000 times before the heat is no longer detectable to the palate.

The spiciest peppers known, such as the Carolina Reaper, have about 3 million Scoville units of heat. Imagine you watch a show on TV claiming that the Carolina Reaper pepper is 600 times spicier than a Jalapeño (3 million divided by 5 thousand), since you know the thermodynamics of chemical equilibria, you can make a more nuanced assessment of that claim.

Explain why or why not the TV host above might or might not be correct. Clearly state any assumptions and use equations if necessary.

Ionization is removal of an electron from the ground state [lowest possible value of n] completely from the atom. Calculate the energy required to ionize a hydrogen like atom (in kJ/mol).

The reaction is: Mg(s) + 2HCl(aq) --> MgCl2 (aq) + H2(g)

1. If 2.016 g of hydrogen (H2) was released, how many moles of magnesium reacted? How many grams of magnesium would this be?

2. How many moles of magnesium would replace one mole of hydrogen (H) in the hydrochloric acid? How many grams? (This is the equivalent weight)

3. Compare the mass calculated above in question 2 to your experimental equivalent weight and calculate the percent difference. What would cause your experimental value to be different? %difference = [(calculated value-experimental value)/(calculated value)]x100

4. Using the ideal gas law, calculate the value of R in L-atm/mol-K by assuming that an ideal gas occupies 22.4 L/mol at STP.

A. Calculate the density of sulfur hexafluoride gas at 706 torr and 20 ?C.

B. Calculate the molar mass of a vapor that has a density of 7.130 g/L at 13 ?C and 744 torr .

What is the pH of 0.41 M H₃PO₄? The K_a values for phosphoric acid are K_a1 = 7.5×10-3, K_a2 = 6.2×10-8, and K_a3 = 3.6×10-13.