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  1. At -78 deg C carbon dioxide CO2 gas become dry ice At -182.95 deg C oxygen gas O2... -198 deg C about all component of air have become liquified or solidify except only noble gas like helium gas ...

  2. ... column ? 每一層就會高一度 , o係咁樣去分 oxygen 同 nitrogen -nitrogen becomes liquid first, why? It is because the melting point of nitrogen...

    分類:科學及數學 > 化學 2008年04月29日

  3. ...definite shape and geometry. When the solid substance is heated to become liquid , molecules acquire enough energy to do work against the intermolecular force to increase...

  4. ...doesn't increase the pressure as more vapour is condensed to become liquid . At the (left) end of this region, when all vapour has ...

  5. ... energy, some become KE and some become PE it is the same as liquid become gas so the intermolecular potential energy of gas is greater than the intermolecular...

  6. ...extinguisher, carbon dioxide is compressed to be liquid . The pressure is greater than 5.11 atm..., dry ice would be sublimed instead ofmelted into liquid in open atmosphere. 另一方面,該固體不是乾冰(二氧化碳固體...

    分類:科學及數學 > 化學 2011年08月29日

  7. ...phenomenon that the Oil solidifies like lard when temperature drops and becomes liquid again upon heating. Before use, the bottle may be wrapped with...

  8. ...the refrigerant into low pressure low temperature. That means, the refrigerant becomes liquid . The last process, evaporation, co-operates with the internal fan, the evaporator...

    分類:科學及數學 > 工程學 2007年05月02日

  9. Yes, oxygen can become solid. All elements have three states, solid, liquid and gas. If the element is below its melting point, it will...

  10. ...temperature. Z is in gas state . X is solid under -30 & become liquid in our room temp. Y is still solid at 300 , so it is solid...

    分類:科學及數學 > 化學 2010年07月25日