25.0g of NaCl is placed in a 100.0ml volumetric flask. Enough water is added to dissolve the salt and then the volume is brought to 100.0ml total. What is the molar (moles/L or M) concentration of the NaCl?

Answer : The molar concentration of in the solution is, 4.27 M

Explanation : Given,

Mass of = 25.0 g

Volume of solution = 100.0 mL

Molar mass of = 58.5 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

Now put all the given values in this formula, we get:

Therefore, the molar concentration of in the solution is, 4.27 M

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: