What is the molarity of NaNO, when 250 ml of 0.750 M NaNO, is boiled down to 175 ml?

Much like a dozen is equal to 12 (this could be doughnuts, eggs, people, etc.), one mole is equal to 6.022 x 1023 atoms, molecules, electronsExplanation:

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: