Aphysical change in matter is a change in size and shape, (through cutting, breaking, or grinding), or state, (through melting, boiling, freezing, evaporating, and condensing).
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The correct answer is:   bri hope this answer was ! : )

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.

D. h2o + h2o > h3o + oh- confirmed.

The disturbance is only parallel to the motion of the wave.