At 365 K, pure toluene and hexane have vapor pressures of 5.82 x 10⁴ Pa and 1.99 x 10⁵ Pa, respectively.

a.) Calculate the mole fraction of hexane in the liquid mixture that boils at 365 K at a pressure of 1140 Torr.

b.) Calculate the mole fraction of hexane in the vapor that is in equilibrium with the liquid of part (a).

63. Which of the following is an omega 3 fatty acid?

A.   18:0

B.   18:3 Δ^9,12,15  

C.   16:1 Δ⁹

D.   18:2 Δ^9,12

E.   20:4 Δ^5,8,11,14

64. Which of the following is an essential fatty acid?

A.   lauric acid

B.   oleic acid

C.   linoleic acid

D.   linolenic acid

E.   both C and D are essential fatty acids.

The solubility product constant for CuI(s) is 1.1 x 10^-12. Calculate the value of E knot for the half-reactoin: CuI + e- ---> Cu + I-.

For Cu+ + e- ---> Cu, E knot = 0.52V

What major factor(s) affect the experimental determination of the heat of formation of magnesium oxide using calorimetry?

A 20.00 mL solution of 0.0840M HOCl is titrated with 0.0560M KOH solution. Calculate the pH after each of the following additions of the KOH solution:

a. 15.00mL

b. 30.0mL

c. 32.0mL

If He(g) has an average kinetic energy of 4890 J/mol under certain conditions, what is the root mean square speed of F2(g) molecules under the same conditions?

Ways and sugesstions to improve Aldol Reaction: Dibenzalacetone lab/ experiment?

Can an impure sample of oleic acid be purified by recrystallization? Justify your answer for full credit.

Gaseous indium dihydride is formed from the elements at elevated temperature: In(g)+H2(g)⇌InH2(g),Kp=1.48 at 973 K The partial pressures measured in a reaction vessel are PInPH2PInH2===0.0550atm0.0290atm0.0780atm Determine the equilibrium partial pressure of In. Determine the equilibrium partial pressure of H2. Determine the equilibrium partial pressure of InH2.

how could proton nmr be used to quickly differentiate between a mono versus a di-nitration product

Candy chemist was asked to determine the concentration (m/m) of new alcoholic beverage from the molarity, which was determined to be 3.205 M and the density, which was found to be .984 g/mL/ What is the mass percent of ethanol (MM= 46.068 / mol) in the beverage ?

Which equation can be used to find the pH of a buffer. Then calculate the pH of a buffer containing 0.20 M CH3COOH and 0.20 M CH3COONa. What is the pH after adding 10.0 mL of 0.10 M HCl to 65.0 mL of the buffer?

81) You are a engineer in a shipping company and you have identified some corrosion on one of your ocean freighters that is occurring below the water line, around rivets that have some kind of green slime covering them. What’s happening and what can you do to mitigate the problem?

.

Please answer in clear words NO guessing!!! Thanks

Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 3.00 ✕ 102 mL of solution and then titrate the solution with 0.138 M NaOH.

C6H5CO2H(aq) + OH-(aq) C6H5CO2-(aq) + H2O(ℓ)

What are the concentrations of the following ions at the equivalence point?

Na+, H3O+ ,OH-

C6H5CO2-

M Na+

M H3O+

M OH-

M C6H5CO2-

What is the pH of the solution?

Consider the chemical reaction: C(s)+H2O(g)→CO(g)+H2(g)

How many liters of hydrogen gas are formed from the complete reaction of 1.16 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and temperature of 319 K. ( ANSWER SHOULD BE IN LITERS )

Express your answer using two significant figures.

CH3OH can be synthesized by the reaction:
CO(g)+2H2(g)→CH3OH(g)

How many liters of H2 gas, measured at 741 mmHg and 88 ∘C, are required to synthesize 0.68 mol of CH3OH?

Express your answer using two significant figures.

How many liters of CO gas, measured under the same conditions, are required?