Question:

which statement about chemical reaction rates is true?

answers:

(a) the reaction rates cannot change.

(b) the reaction rates are always constant.

(c) the reaction rates can increase.

(d) the reaction rates cannot decrease.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

Ajoint produces movement when its angle decreases. which type of movement is it?

As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "