Question

In chemistry and chemical reactions what is concentration

Answer 1

concentration means Molarity which further can be explained in the following way

for example there are two beakers, in the first beaker you have 100cm3 of water as a solvent and 20 grams of salt or any solute and int the second beaker you have 50cm3 of water and 30 grams of salt. once you mix the two compounds a solution will be formed but the more concentrated solution will be the one in which the solvent was closer to solute in mass... concentration is a reaction condition and can be calculated by the following formula

molarity =moles of solute/ liters of solution

Answer 2

Concentration refers to how much of a chemical is present in a given solution.

Consider two beakers with 200cm^3 of water. One has 10g of salt, the other one has 50g of salt. The beaker with the 50g of salt is more concentrated/has a higher concentration because there is much more of the solute in the same amount of solvent.