In an experiment, a student wants to increase the rate of a reaction that involves gases. Which change to the reactants would accomplish this?
Increase the volume to decrease pressure and to increase concentration.
Increase the volume to increase pressure and to decrease concentration.
Decrease the volume to decrease pressure and to increase concentration.
Decrease the volume to increase pressure and to increase concentration.

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.