The rate of a chemical reaction varies, depending on the initial amount of a certain compound. In general, the reaction rate, V, can be expressed by the following formula, where k is a positive constant, and a is the initial amount of the compound. V(x)equalskx(aminusx) The positive constant, k, for one such reaction is 0.4, and the initial amount of the compound, a, is 22. For what value of x is the rate a maximum?

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

a police officer and a ambulance

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

2b2t

explanation:

2b2t