A gaseous compound containing hydrogen and carbon is decomposed and found to contain 82.66 % carbon and 17.34 % hydrogen by mass. The mass of 158 ml of the gas, measured at 556 mm Hg and 25 ∘C, is found to be 0.275 g.

Why is an extraction a useful method of "pre-purification" of organic compounds? what physical properties does the process rely on?

Alkanes are hydrocarbons that contain what type of bonds? A) Single covalent bonds only B) At least one double bond C) At least one triple bond D) Ionic bonds

Homogeneous mixtures

What form of the ideal gas law would you use to calculate the number of moles of a gas? A. T = pv nR B. n = PV RT C. v = nRT p D. p = nRT v

Which choice is not true of a liquid in a glass capillary with a convex meniscus? Which choice is not true of a liquid in a glass capillary with a convex meniscus? The liquid has strong cohesive forces.

What causes an increase in the average global temperature?

Which of the following is true regarding nuclear fission and nuclear fusion? A. Both of these processes can provide energy. B. Our sun's heat is an example of both of these processes. C. Both of these processes are equally complex to control. D.

It takes 5.2 minutes for a 4.0 g sample of francium-210 to decay until only 1.0 g is left. What is the half-life of francium-210? 7.8 minutes 1.3 minutes 2.6 minutes 5.2 minutes

What is the correct orbital diagram for carbon

How do you do today?!