Consider the following brønsted acid-base reaction at 25°c: hf(aq) + cl−(aq) ⇆ hcl(aq) + f−(aq) (a) predict whether k will be greater or smaller than 1. it will be greater than 1. it will be smaller than 1. (b) does δs o or δh o make a greater contribution to δg o ? δs o makes a greater contribution. δh o makes a greater contribution. they both contribute equally. (c) is δh o likely to be positive or negative? it is likely to be positive. it is likely to be negative. it is not possible to know.

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s