16. what do the lines around the charged particles represent? a. the electric field around the particles b. the resistance in the circuit charging by conductioction what does the diagram show about electric charge? a. charges that are the same attract each other. b. charges that are different repel each other. c. charges that are the same repel each other.

4

explanation:

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.