Which example is a precipitation reaction?
a) solid fe combines with o2 gas to produce solid fe2o3.
b) solid c6h12o6 combines with o2 gas to produce co2 gas and h2o gas.
c) a solution of hci mixes with a solution of naoh to produce a solution of naci.
d) a solution of agno3 mixes with a solution of naci to produce solid agci and a solution of nano3.

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.