Which of the following is a Newman projection of a staggered conformation for propane? Н Н. CH3 о О "I = = ||| IV H HH H Н CH3 тонон ва н H Н Н Н || ||| V HCH3 HCH3 нон нано CH3 H IV V

polythene, Polyvinyl chloride and nylon are 3 examples of polymers have been given choose further 3 examples which form biological molecules.

The name carbohydrate comes from the fact that many simple sugars have chemical formulae that look like water has simply been added to carbon. (The suffix hydrate from the Greek word hydor ("water") means "compound formed by the addition of water.") The actual chemical structure of carbohydrates doesn't look anything like water molecules bonded to carbon atoms (see sketch at right). But it is nevertheless possible to chemically extract all the hydrogen and oxygen from many simple carbohydrates as water, leaving only carbon behind. If you search the Internet for "reaction of sulfuric acid and sugar" you will find some impressive videos of this. Suppose you had  300.g  of ordinary table sugar, which chemists call sucrose, and which has the chemical formula  C12H22O11 . Calculate the maximum mass of water you could theoretically extract. Be sure your answer has a unit symbol, and round it to the correct number of significant digits.

H2SO4 + CaCO3 → CaSO4 + H2O + CO2