(Answered) A 2394mg sample of a drug designed to treat malaria was run

Academics

A 239.4mg sample of a drug designed to treat malaria was run through a series of reactions to convert all the nitrogen in the compound into N₂ (g). The gas collected over water at 23.8 ^oC and a pressure of 755.5 torr had a volume of 18.66 mL. The vapor pressure of water at this temperature is 22.11 torr.

a) Calculate the precent by mass of nitrogen in the sample.

b) A 3.239mg sample of the drug is combusted in air to produce 8.785mg of CO2 (g) and 2.160 mg of water vapor. Determine the percent by mass of carbon and hydrogen in the sample. Assume that any remaining element is oxygen and calculate the empirical formula.

c) If the molar mass of the compound is 324.0g/mol, what is the actual molecular formula of the drug?

View complete question

Chemistry, Academics

Category:- Chemistry
Reference No.:- M92727632
Price:- $15

Verified Expert

Priced at $30 Now at $15, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Chemistry

A sample consisting of 10 mol caco3s was heated to 800 degc

A sample consisting of 1.0 mol CaCO3(s) was heated to 800 °C, when it decomposed. The heating was carried out in a container fitted with a piston that was initially resting on the solid. Calculate the work done during co ...

A photon of wavelength 200 nm strikes the surface of a

A photon of wavelength 200 nm strikes the surface of a metal causing an electron to be ejected with kinetic energy of 4.3 x 10-19 J. What was the threshold frequency of the metal?

A sealed vessel contains a gaseous mixture of h2 and excess

A sealed vessel contains a gaseous mixture of H2 and excess O2. The mixture is at 500 K and has a total pressure of 140 kPa. After all of the hydrogen is reacted, the total pressure of the system measured at the same tem ...

If liquid is at or above its flash point the flame spread

If liquid is at or above it's flash point, the flame spread rate is fast, and the entire pool is engulfed within seconds. In such a case, the liquid is already evaporating sufficiently to reach the lower flammability lim ...

202 g of an unknown molecular solute is dissolved in 565

20.2 g of an unknown molecular solute is dissolved in 5.65 moles of aniline (C6H5NH2), causing the boiling point of aniline to increase by 3.79 °C. Calculate the molar mass of the solute. For aniline, the molar mass is 9 ...

A chemist must preparenbsp450 mlnbspofnbsp130 mm aqueous

A chemist must prepare 450. mL of 130. mM aqueous aluminum sulfate (Al2(SO4)3) working solution. He'll by pouring out some 0.452 mol/L aqueous aluminum sulfate stock solution into a graduated cylinder and diluting it wit ...

A 200 ml sample of 0200 m hbr solution is titratedwith 0200

A 20.0 mL sample of 0.200 M HBr solution is titratedwith 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added. (19.8 mL)

An electron is ejected from a metal with a velocity 778

An electron is ejected from a metal with a velocity 7.78 x10^5 m/s. If the metal has a threshold frequency of 9.90 x1014 Hz, what was the wavelength of the incident photon?

A student finds that the mass of an object is 662 kg she is

A student finds that the mass of an object is 6.62 kg. She is told that her measurement has an error of 12.3%. What is the true mass (in kg) of the object?

1 balanced equation for thenbspdouble-replacement

1. Balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of iron(II) chloride and sodium hydroxid ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Chemistry Expert