几道英语急口令小题，急！！！！

来源：蜘蛛抓取(WebSpider) 时间：2012-05-26 15:56 标签： 小学英语脑筋急转弯
帮忙解决几道很简单的英语题 急！！！, 帮忙解决几道很简单的英语题 急 帮忙解决几道很简单的英语题 急！！！ 问题补充： It is important that we should eat some healthy food(用to do 句型改为同义句)It is important _____ _____ _____ _____ some healthy food.To play football is very difficult.(同义句转换)_____ _____ very difficult _____.He hopes that he will be a famous writer.(同义句转换)He hopes _____ _____ a famous writer. ┌Y"の 帮忙解决几道很简单的英语题 急！！！ for us to eatit is to play football（或playing football）to be求解几道英文的化学题，急！（1）In dry atmospheric air, the four most abundant components are N2, X = 0.808; O2, X = 0.1915; Ar, X = 9.34x10-5; and CO2, X = 4.066x10-4. Calculate the partial pressure of O2, in torr, under standard atmospheric conditions.（2）Oxygen gas can be generated by heating KClO3 in the presence of some MnO2.2KClO3 → 2KCl + 3O2 If all the KClO3 in a mixture containing 2.46 g KClO3 and 0.35 g MnO2 is decomposed, how many liters of O2 gas will be generated at T = 29.0°C and P = 752.6 torr?（3）A pressurized can of whipped cream has an internal pressure of 1.175 atm at 26°C. If it is placed in a freezer at -20°C, what is the new value for its internal pressure (in atmospheres)?（4）In dry atmospheric air, the four most abundant components are N2, X = 0.808; O2, X = 0.1915; Ar, X = 9.34x10-5; and CO2, X = 4.066x10-4. Calculate the partial pressure of N2, in torr, under standard atmospheric conditions.（5）Elemental analysis is performed on an organic liquid with a fishy odor. Vaporization of 240.0 mg of the compound in a 180 mL bulb at 170°C gives a pressure of 435.0 torr. What is the molar mass of this compound?（6）A mouse is placed in a sealed chamber with air at 762.0 torr. This chamber is equipped with enough solid KOH to absorb any CO2 and H2O produced by the mouse. The gas volume in this chamber is measured to be exactly 2.50 L, the temperature is held constant at 297 K. After two hours the pressure inside the bottle falls to 723.1 torr. What mass of oxygen has the mouse consumed?急，求答案！ 第一部分是求空气中氧气的分压，还要用托表示压强单位101325PaX 0.1915=？，然后换算能托再除以133Pa，因为1torr=133pa，下面一会再看 rature is held constant at 297 K. After two hours the pressure inside the bottle falls to 723.1 torr. What mass of oxygen ha （1）在干燥的空气中，四个最丰富的成分N2，X = 0.808; O2, X = 0.1915; Ar, X = 9.34x10-5; andx = 0.808；O2，x = 0.1915；AR，X = 9.34x10-5；和CO2, X = 4.066x10-4. Calculate the partial pressure of

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