Agaseous substance turns into a solid. which best describes this change?
a substance that has a specific shape changes to a substance that has no specific shape.
a substance that has no specific volume changes to a substance that has a specific volume.
a substance that completely fills its container changes to a substance that has a specific volume but takes the shape of its container.
a substance that has a specific volume changes to a substance that has a much smaller specific volume.

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer

How many atoms or molecules are there in a mole of a substance?

Which of the following factors does not affect soil formation? a. precipitation b. time c. erosion d. none of the above