Jose makes two mixtures. mixture one contains 10 g of salt dissolved in 50 ml of water. mixture two contains 20 g of salt dissolved in 50 ml of water. compare the concentrations of the two mixtures.

The second mixture is more concentrated in terms of the solute or salt content compared to the first mixture where they have the same volume of solvent (the water). Moreover, the salt of the first mixture dissolve much faster compare to the second mixture where it needs more time to completely dissolve the salt, which is twice in quantity of mixture one.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

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