TASK, TUESDAY, 25 SEPTEMBER 2012

1. why are  ripens fruit result etilent gas?

Answer : Banana and fruit type, the process proceeds chemically mature naturally. Carbohydrates in the womb flesh turned into glucose, which create a sense of sweet and tender. 

The process produces Ethylene Gas. Gas is creeping from one to another molecule to make its surroundings so well cooked. This is the basis to give Calcium carbide (Calcium Carbide), is used to assist the process of maturation. Calcium carbide, carbide we call it, when hit the water or moisture will produce Asetilin Gas. This gas in its chemical structure similar to natural Ethylene. Because this is filled with gas Asetilin, the fruit will ripen simultaneously ferment. Yes, if less ripe fruit will not as sweet as a ripe, because the content Carbohydrates - Starch substances is still lacking. Gas asetilin because light will fly and mixed with air.

  because the fruits which contain ethylene gas is natural gas, which was conceived young fruits or young. chemical structure of ethylene = acetylene gas.

 on, old fruit ethylene gas concentrations increase, in order to accelerate the ripening of fruit ...

Fruit ripening process naturally results in some natural gases like water vapor, CO2 and acetylene (carbide gas = C2H2).

Chemically into storage if the fruit is also added carbide it will spur the production of acetylene from the fruit ripening process will mean faster. Carbide (CaC2) if in the open air will react with water vapor in the air (H2O) bit by bit to produce acetylene (C2H2).

 So that makes fruit ripe hormone called ethylene gas (carbide = a trade name). Actually plants naturally produce this hormone is for fruit to ripen. However, the carbide pedagan add more fruit than normal levels for fruit to mature faster.

Use of this carbide does not cause negative impacts. Levels of vitamins and minerals do not change because the use of this carbide. This is because the carbide is a chemical that stimulates only pembntukan ethylene gas which stimulates the ripening process of fruit. In addition, no significant negative impacts to the health of consumers.

2. Why do carbon afford to form duplicate bonting 1,2,3

Answer : Carbon chains may be either a single bond, double bond, or a triple bond. Forms of carbon chains themselves are very varied, there is a straight (unbranched), there is a branching, there are open, and there is a closed (circular). Various forms of carbon chains presented in the figure below. Why carbon can form so many compounds, with very varied types? Why is this not happening in the adjacent element or elements are classified with the carbon in the periodic table? BC has the electron configuration of atoms 2 4. The four valence electrons distributed on the four C atoms in a symmetrical position.  The carbon atom has four valence electrons with the atomic radii price the smallest of the atomic radius of other elements in the group IVA. It facilitates the C atom to form covalent bonds with other atoms, especially with atomic H, O, N, and halogen atoms (F, Cl, Br, and I). Covalent bonds are formed to meet the octet rule. The carbon atom can form up to four covalent bonds. Covalent bond formed by atoms C is more powerful than other covalent bonds, so that the carbon compounds are stable.

         The position of carbon atoms in the periodic table in the middle so it has a moderate electronegativity value (2.5). This trait causes the carbon atoms can bind atoms having electronegativity greater or even smaller. The carbon atom can have a positive oxidation state (+2, +4), negative (-2, -4), or even zero.