Relationship between refractive index and mole fraction

How can you use refractive indices to calculate weight % composition of a distillate and its residue? How can you convert the weight % composition to mole fractions? Could you please show me how they relate in mathematical form?

What they mean by use 55.0% excess of acetic anhydride?

What they mean by use 55.0% excess of acetic anhydride? Please provide the solutions that I can follow along.

British thermal units

I AM HELPING MY 7TH GRADE DAUGHTER WITH A PAPER IN REGARDS TO BTU'S AND I DON'T REALLY COMPLETELY UNDERSTAND BTU'S ETC. THE PROJECT IS WHAT WOODS PUT OUT THE MOST BTU'S OAK OR PINE? WE BELIEVE OAK DUE TO THE DENSITY OF THE MATERIALS. CAN YOU PROVIDE ME WITH MORE INFORMATION IN REGARDS TO THIS?

A 100 ml sample of .10 molar NAOH solution was added to 100 ml of .10 molar H3C6H5O7.

A 100 ml sample of .10 molar NAOH solution was added to 100 ml of .10 molar H3C6H5O7. After equilibrium was established, which of the ions listed below was present in the greatest concentration? A) H2C6H5O7^- B) HC6H5O7^2- C) C6H5O7^3- D) OH E) H^+ Please provide thorough explanation for this question.

A certain laser uses a gas mixture...

A certain laser uses a gas mixture made up of 9.00 g HCL, 2.00g H2, and 165.0g Ne. What pressure is exerted by the mixture in a 75.0 L tank at 22 degree C? WHich gas has the smallest partial pressure?

A gas was found to have a densitiy of...

A gas was found to have a densitiy of .08747 mg/ml at 17.0 degree C and a pressure of 76o torr. What is its molecular mass? Can you tell waht gas most likely is?

A chemist isolated 6.3 mg of one of the many boron hrdrides...

A chemist isolated 6.3 mg of one of the many boron hrdrides in a glass bulb with a volume of 385 mL at 25.0 degree celcius and a bulb pressure of 11 torr. A) what is the molecular mass of this hydride? b) waht is its molecular formula, BH3, B2H6, or B4H10?

Volume of an Iceberg

Calculate the volume (in meters cubed) of a 25,000 tonne iceberg. (1 tonne - 1,000kg)

S2O3^2-9aq)+Cl2(g) -> SO4^2- (aq) + Cl^- (aq)

Write a balanced redox equation for the reaction S2O3^2-9aq)+Cl2(g) -> SO4^2- (aq) + Cl^- (aq) in both acidic and basic medium.

Write a balanced redox equation for the reaction:

S2O3^2-9aq)+Cl2(g) -> SO4^2- (aq) + Cl^- (aq) in both acidic and basic medium.