Assuming 100% dissociation, calculate the freezing point (TfTf) and boiling point (TbTb) of 1.39 m SnCl4(aq)1.39 m SnCl4(aq).

Colligative constants can be found in the chempendix.

Pure l-phenylalanine has a specific rotation of -35.1 degrees. What is the enantiomeric excess of a 10.0 g/mL solution of phenylalanine which when placed in a standard 1.00 dm cell and analyzed in a polarimeter rotates plane polarized light -31.6 degrees?

I. what is the energy content (GJ/ha) of willow at 55% moisture content, if it has a calorific value of 7MJ/kg and a yield of 22 tonnes/ha at 55% M.C?

II. if one tonne (1145 litres) equals 43GJ, what is the oil equivalent in litres of the willow per hectare?

III. if edenderry power station has an excess CO2 how many tonnes of willow at 55% M.C would be needed to clear the excess CO2? peat has a calorific value of 8GJ/tonne and yields 0.856 tonnes of CO2 per tonne burned

IV. what is the energy content of 10 ha of miscanthus at 20% M.C if the net calorific value is 13.7 MJ/kg at a yield of 12.5 tonne/ha?

What fraction of ethane-1,2-dithiol is in each form (H2A, HA-, A2-) at pH=9.25? Please do show all work. Thank you!

Given cyclopentane at 1000kPa, calculate the following:

a) The saturation temperature associated with the pressure that you were given, assuming that the system is in vapour-liquid equilibrium. Use an equation of state method to solve this problem.

b) The molar volume of the vapour and liquid phase.

d) The fugacity at saturation.

The data below shows the production of CO₂ from carbonic aanhydrase. The zero-order rate constant was measured at different temperatures. Calculate E_A , Delta H⁺ , the Arrhenius Constant, and Delta S⁺.

What is the lowest temperature at which the following reaction is spontaneous? H2O(g) + C(graphite) ----> H2(g) + CO(g)

A 50.0ml aliquot of 0.100 M NaOH is titrated with 0.200 M HCl. Calculate the pH of the solution after addition of 0.0, 5.0, 10.0, 25.0, 35.0, 45.0, 55.0 of HCl. Plot the titration curve in a graph paper.

1) Can you tell me spontaneous redox rxn at 25°C?

i. Au (s) + Fe^3+ (aq) → Au^+ (aq) + Fe^2+ (aq)

ii. 2 Fe^3+ (aq) + 2 I^– (aq) → 2 Fe^2+ (aq) + I2 (s)

iii. 2 Li^+ (aq) + F2 (g) → 2 Li (s) + 2 F^– (aq)

2) Whats best oxidizing agent at 25°C?

A. F– (aq)

B. Fe2+ (aq)

C. Ca2+ (aq)

D. Na (s)

E. Br2 (g)

Redox Reactions: Less active metals like copper will reacti with concentrated nitric acid to produce nitric oxide gas and the Cu²⁺_(aq) ion at 25C.

A) Write balanced chemical equation for this process.

              6H⁺_(aq) + 2HNO_3(aq) + 3Cu_(s) --> 3Cu²⁺_(aq) + 2NO_(g) + 4H₂O _(aq)

B) Evaluate change in E for the reaction in (a).

1) Cr2O7^2- (aq) + NO2^-(aq) -> Cr^3+(aq) + NO3^-(aq)

Whats the coefficient of water after balancing redox rxn, which in acidic solution?

2) Which solution will increase molar solubility of CuCO3 (Ksp=2.3*10^-10) at 298K? (Ksp of Cu(OH)2 is 2.2*10^-20)

HCl, NaOH, Na2CO3

I seriously have no idea with this problem please explain with details thank you so much

If theres saturated aqueous solution of Fe(OH)2 at 25°C and Ksp = 4.87 × 10−17, which one is false statement?

A. Adding acid to the solution will increase the solubility.

B. Fe(OH)2 is a strong electrolyte.

C. The pH of the solution will be greater than 7.

D. The solubility of the salt will be equal to [OH−].

E. Addition of more solid Fe(OH)2 to the solution will increase the hydroxide ion concentration.

Whats pH of saturated solution of Mg(OH)2? (Ksp is 1.2 *10^-11)

1. Part A) Write the intact-compound equation for the neutralization of aqueous hydrofluoric acid by aqueous calcium hydroxide. Express your answer as a chemical equation. Identify all of the phases in your answer.

2. Part B) Write the net ionic equation for the neutralization of aqueous hydrofluoric acid by aqueous calcium hydroxide.

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

3. Part C) What is the name of the salt that forms?

Spell out the full name of the compound.

Can I someone explain this I don't understand it.

Draw a flow diagram for the separation of benzoic acid, phenol, and naphthalene. Enough detail must be included for someone to perform the experiment, however, you do not need to include masses or volumes

( this question pertains to acid/base extractions, ect. ) Please be neat, as I seek guidance and mastery, thank you.