This fin variety most closely resembles wild betta splendens, as long tails and the subsequent tail types were all selectively bred by human intervention. These fish are often mistaken for female bettas, who generally have shorter fins, but this is an entirely different variety of betta.Males can be distinguished by females by their longer ventral fins, more pointed/angled anal fin, and slightly different body shape.ouble Tail. A fin type in which the caudal (tail) fin is split into two lobes instead of one. This is a genetic trait, and the same genetics that cause this double-tail cause the dorsal and anal fins to be very broad and the body to be shorter, which predisposes these fish to swimbladder problems.
Oxygen = three ions each with a charge of -2 = 3 x -2 = -6. The overall charge of the polyatomic ion is -2. This means that the oxidation number of the carbon must be +4. Total charge = +4 + -6 = -2. Here is a video which discusses this topic by discussing how to determine oxidation numbers of elements in the bicarbonate and dichromate ions. Video from: Noel Pauller.
Carbon atoms are about 25% lighter than oxygen atoms (the ratio of their weights is 3 to 4). What is the weight ratio of the carbon and oxygen that go into the formation of carbon monoxide? Answer the same question for carbon dioxide. Answer: Carbon monxyde has the chemical composition CO, i.e. there is one carbon atom for every oxygen atom; therefore the weight ratio of carbon to oxygen in this compound is just the weight ratio of the atoms, i.e. 3 to 4. In carbon dioxide, , there are two oxyen atoms per carbon atom, so the carbon to oxygen weight ratio in carbon dioxide is 3 to 8. [2.4] Which of these is a pure compound, which is an element, and which is neither: (a) pure water, (b) oxygen gas, (c) liquid mercury, (d) , (e) U, (f) air,