isopentane造句

• The difference is 1.8 mol for isopentane, and 5 kcal / mol for neopentane.
• :: : : Isopentane is also highly explosive and the gas shouldn't be inhaled.
• Indeed, the entropy of fusion of neopentane is about 4 times lower than that of n-pentane and isopentane.
• So far, isopentane is looking like the best option . talk ) 05 : 27, 11 October 2013 ( UTC)
• For example, ( CH 3 ) 2 CHCH 2 CH 3 ( isopentane ) is named 2-methylbutane, not 3-methylbutane.
• Molecular graphs can distinguish between structural isomers, compounds which have the same molecular formula but non-isomorphic graphs-such as isopentane and neopentane.
• Birdsville also has an 80 kW bore on the Great Artesian Basin at 98 癈 and is used to heat the operating fluid isopentane in a Rankine Cycle engine.
• :: Hmm, isopentane looks like it has an even better boiling temp of 27.7癈, so it should boil more when I submerge my hands.
• Moreover, its enthalpy of fusion is lower than the enthalpies of fusion of both n-pentane and isopentane, thus indicating that its high melting point is due to an entropy effect.
• The environmental organization Greenpeace solicited a European laboratory to research an alternative ozone-and climate-safe refrigerant in 1992, gained patent rights to a hydrocarbon mix of isopentane and isobutane, but then left the technology as open access.
• All of the refrigerants which EPA approved for motor vehicle use in place of CFC-12 ( as of 28 September 2006 ) contain no more than 4 % total flammable hydrocarbons ( butane, isobutane, and / or isopentane ).
• The use of the term " paraffin " is a general term and often does not distinguish between pure compounds and mixtures of isomers, i . e ., compounds with the same chemical formula, e . g ., pentane and isopentane.
• The melting point of neopentane (  " 16.6 癈 ), on the other hand, is 140 degrees higher than that of isopentane (  " 159.9 癈 ) and 110 degrees higher than that of " n "-pentane (  " 129.8 癈 ).
• Analysis of sample of propane that can be traced back to Dr . Snelling has been shown to contain 0.062 mole % methane, 23.44 mole % ethane, 57.366 mole % propane, 7.127 mole % isobutane, 11.957 mole % butane and 0.044 mole % isopentane.
• Isomerizations with low energy difference both experimental and computational ( in parentheses ) are endothermic trans-cis isomerization of 2-butene with 2.6 ( 1.2 ) mol, cracking of isopentane to n-pentane with 3.6 ( 4.0 ) kcal / mol or conversion of trans-2-butene to 1-butene with 2.6 ( 2.4 ) kcal / mol.
• Falling electricity production may be boosted through drilling additional supply boreholes, as at Wairakei power station has been running much longer, with its first unit commissioned in November 1958, and it attained its peak generation of 173MW in 1965, but already the supply of high-pressure steam was faltering, in 1982 being derated to intermediate pressure and the station managing 157MW . Around the start of the 21st century it was managing about 150MW, then in 2005 two 8MW isopentane systems were added, boosting the station's output by about 14MW . Detailed data are unavailable, being lost due to re-organisations.