What symbolism do you find in the play,Oedipus?

Consider a buffer system consisting of Benzoic acid (pKa = 4.20) and sodium benzoate,

a) Would this buffer system be an appropriate choice to maintain a pH of 8.5? ues or no

b) To produce a buffer with a pH = 4.55, what mass of sodium benzoate (FM = 104.10) must be dissolved in 500 mL of 0.65 M benzoic acid?

c) What is the resulting pH if 45-mL of 0.08-M HCl is added to 250 mL your buffer?

A 19.34 g mixture of sugar (C12H22O11) and table salt (NaCl) is dissolved in 231 g of water. The freezing point of the solution was measured as -3.84 °C. Calculate the mass percent of sugar in the mixture. Use a list of Kf values.

explain why Tm in HDPE is higher than Tg in comparison to PET and PE
HDPE Tm>>>Tg
PET    Tm >>Tg
PE      Tm>Tg

tm: melting temperature of a polymer
tg=glass transition temperature

Try to solve these problems using the Table method

3. Combustion analysis was performed on 1.50 g of a compound containing C, H and N to yield 3.21 g of carbon dioxide and 0.981 g of water. What is the empirical formula of this compound?

4. A 3.82-g sample of magnesium nitride is reacted with 7.73 g of water. Mg3N2 (s) + 3 H2O (ℓ) → 2 NH3 (g) + 3 MgO (s) The yield of MgO is 3.60 g. What is the percent yield in the reaction?

5. a) A beaker contains 200.0 mL of 0.250 M AgNO3. 200 mL of 0.100 M HCl(aq) is added to it. What is the NO3 − concentration in the final mixture?

b) What is the Ag+ concentration in the final mixture?

Please explain why

How do you determine the active center of a monomer/molecule?

a hydrogen atom is in the 2p state. How much time must elapse for there to be a 1.3 % chance that this atom will undergo a quantum jump to the ground state?

A tablet containing 500 mg of vitamin C was titrated with 20.15 ml of KIO3 to the end point. The same KIO3 was used to titrate 12.1 ml of a commercial juice blend. The juice required 2.40 ml of KIO3 to reach the end point. How many mg of Vitamin C are in the sample of juice blend?

When a solution of barium hydroxide reacts with a solution of phosphorous acid, the product are water liquid and aqueous solution of barium phosphite. Keeping this order, what are the set of coefficients of the balanced neutralization?

Select one:

A. 3-2-6-1

B. 3-2-6-2

C. 1-1-1-1

D. 3-2-3-1

Zn(s)+Sn2+(aq) ? Zn2+(aq)+Sn(s)

Express your answer as a chemical equation. Identify all of the phases in your answer.

Zn(s)+Na+(aq) ? Zn2+(aq)+Na(s)

Express your answer as a chemical equation. Identify all of the phases in your answer.

Cl?(aq)+NO?3(aq) ? NO(g)+Cl2(g)

Express your answer as a chemical equation. Identify all of the phases in your answer.

Draw a picture of solid NaCl, and describe what kinds of interaction are present in NaCl.

Draw a picture of NaCl after it dissolved in water, and describe what kinds of interaction are present in NaCl(aq).

What interactions had to be overcome to form this solution? (Nacl)Was this process exothermic or endothermic?

What interactions had to be formed to form this solution? (Nacl)Was this process exothermic or endothermic?

Consider the reaction IO−4(aq)+2H2O(l)⇌H4IO−6(aq);Kc=3.5×10−2IO4−(aq)+2H2O(l)⇌H4IO6−(aq);Kc=3.5×10−2
If you start with 22.0 mLmL of a 0.908 MM solution of NaIO4NaIO4, and then dilute it with water to 500.0 mLmL, what is the concentration of H4IO−6H4IO6− at equilibrium?

How does insulin, acting through the insulin receptor, exert "downstream" effects? In other words, what are the consequences, at a biochemical/molecular level, of the binding of insulin to a cell, through the insulin receptor.

Can you explain what this question is asking as well. Please list your sources.

Thank you!