The atmosphere is composed of

A. the oceans

B. the air within 500 feet of the Earth's surface

C. all the gases that surround the Earth

D. all the plants and animals that breathe the gases that surround the Earth.

There is an error in the rate-determining step of the following proposed mechanism. Slow step: CH3 (g) + Cl2 (g) - CH3 (g) + HCl (9) and the rate rule is kz = [CH][CL] Fast step: CH3 (g) + Cl2 (g) → CH2Cl (g) + Cr (g) and the rate rule is kz =

What determines how fast a substance will dissolve

what would be the correct molecular formula for carbon tetrachloride

Both suspensions and colloids are heterogeneous mixtures. Define and characterize a colloid, listing similarities and differences to a suspension. Give several examples of colloids.

The virial equation of state is not recommended to be used for polar compounds (asymmetrical compounds with non - zero dipole moment) Select one: True False

Why is it important that the polymer membrane in a PEM fuel cell allows only protons to move through it? It forces the electrons to move through an external circuit, where they can do work.

Convert 1.65 * 1024 atoms of carbon to moles of carbon.

A metal cylinder holds helium gas at the gift shop. When someone orders a balloon, a small amount of helium is transferred from the tank to the balloon.

Cities are measurably hotter than the surrounding suburbs

if two objects at different te, peraure are in contact with each other what happens to their temperature