The graph shows a car's velocity over time. Velocity versus Time
60
50
40
Velocity (mph)
30
20
10
2
6
7
3 4 5
Time (s)
What is the car's acceleration between 6 and 7 seconds?
O
A. 9 mph/s
B. 12.5 mph/s
C. 7.5 mph/s
D. 60 mph/s

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.

Answer///an early form of the atomic theory; dalton atomic theory;