Chemical formula that compound will be made up of the same elements in the same proportion or ratio. For example, any water molecule is always made up of two hydrogen atoms and one oxygen atom in a 2:1 ratio. If we look at the relative masses of oxygen and hydrogen in a water molecule, we see that 94% of the mass of a water molecule is accounted for by oxygen and the remaining 6% is the mass of hydrogen. This mass proportion will be the same for any water molecule. The alkene called but-2-ene has two isomers, which the chemical formula CHCH=CHCH
Treasures of the Snow his mother and sister criticise his laziness. Conflict flares one day when Lucien is sledging down to school and accidentally collides with Annette's sledge, throwing her into a ditch full of snow. Out of resentment at her success in school, he doesn't stop to help her, but speeds off to school instead. When she arrives late, cold, wet and grazed, with torn wet books, Annette has to explain what happened. Lucien is caned by the schoolmaster, and ostracised by the rest of the class. While on his way home he vents his frustration by kicking over a snowman Dani has