Em uma maratona de 42 km, Paulo já havia corrido 30 km quando sentiu um desconforto muscular e resolver parar. A razão entre a distância que ele correu em relação ao percurso total é: a)1/2
b)3/7
c)5/7
d)7/9​

Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.

Which of the following is true for the relation f(x)=2x^2+1

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?