Explanation:
Moles of NaOH = 10g / (40g/mol) = 0.25mol.
0.25mol / 500g = 0.50mol / 1000g = 0.50mol/dm³.
The molarity is 0.50mol/dm³.
Light moves in a straight line except at surfaces between different transparent materials, where its path bends.
120 x 1.05 = 126 gazelles next year.
If you times it by 105% then you get the answer of adding 5% on.
