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11 janv. 2018 · Carbon film fossils are formed from the carbon residue of a soft-bodied organism that has been buried in sediment. Most of the body or any organism is made of carbon. When an organism dies, it can become covered in layers of sediment. Eventually all the materials that make up the body of the dead organism break down from the heat and the huge weight of the overlying layers of sediment, leaving ...
26 mars 2018 · Carbon films: Fossils called carbon films can preserve delicate details of leaves and animal parts. The formation of a carbon film begins when an organism is buried under fine sediment. Over time, pressure squeezes out liquids and gases and leaves behind a thin film of carbon. Black shale often contains carbon film fossils. Sometimes, the ...
Answer: A trace fossil is an impression made by an organism not the organism itself. Explanation: Examples of trace fossils are foot prints, impression of leaves on soil, tubes left by worms, Any evidence of the existence of living things is a trace fossil. An unusable example of a trace fossil was a spark plug I found fossilized in the strata ...
10 juil. 2016 · DeltaH = -"389 kJ" The problem provides you with the thermochemical equation that describes the combustion of methane, "CH"_4 "CH"_ (4(g)) + 2"O"_ (2(g)) -> "CO"_ (2(g)) + 2"H"_ 2"O"_ ((l))" "DeltaH = -"890.3 kJ mol"^(-1) Notice that the thermochemical equation includes the enthalpy change of combustion, which as you can see is given in kilojoules per mole, "kJ mol"^(-1). This tells you that ...
22 avr. 2016 · Carbon 14 has 6 protons and 8 neutrons ; Because molecular mass is calculated by adding the number of protons and neutrons, you could also say that the difference between these isotopes is mass ( if you have 1 mole of each isotope, carbon 14 would have the greatest mass ). Carbon 14 is also radioactive with a half-life of 5700 years.
22 juil. 2015 · In the cyclic form of a sugar, the anomeric carbon is the carbon that was part of the carbonyl group in the straight-chain structure. For example, the linear structure of glucose is (from www.chem.wisc.edu) When the chain converts to a ring, C-1 becomes a chiral centre. (from science.uvu.edu) C-1 is the anomeric carbon. In D-fructose, the carbonyl group is at "C-2". (from web.pdx.edu) (from ...
27 août 2017 · Answer link. Because each isotope of the element HAS THE SAME NUMBER OF ELECTRONS. To a first approximation, the chemistry of an element depends on the exchange and sharing of electrons between atoms to make and break strong chemical bonds. While isotopes has different numbers of neutrons, massive, neutrally charged, nuclear particles, they ...
20 sept. 2017 · A) Multiply 25% times 5730 years since only 25% of the carbon remains. B) Divide 5730 years by 2 since carbon has went through two half-lives. C) Multiply 5730 years by 2 since two half-lives have went by for carbon. D) Multiply 4 times 5730 years since carbon has went through 4 half-lives.
16 mai 2017 · Explanation: However, when the oxygen supply is restricted, combustion is incomplete and it forms carbon monoxide instead. 2C(s) + O2(g) → 2CO(g) Carbon burns in oxygen to form carbon dioxide. See below. Carbon + Oxygen → Carbon dioxide C (s) + O_2 (g)→ CO_2 (g) However, when the oxygen supply is restricted, combustion is incomplete and ...
23 mai 2017 · Carbon travels from the ground to the atmosphere Fixation of carbon is carried out by living organism including plants and animals. Nitrogen Cycle: Has the processes of mineralization, nitrification, and denitrification. Nitrogen fixation occurs from converting Nitrogen gas (N_2) into ammonia (NH_3). Nitrogen is sent to the ground.
