act科学 题目6.docx

Passage VISuppose that 1?gram?(g) of Material?A, initially a liquid, is kept in a cylinder fitted with a piston at a constant pressure of 1?atmosphere?(atm). Table?1 and Figure?1, respectively, show how Material?As volume and temperature vary over time as Material?A absorbs heat at a rate of 10?calories per second (cal/sec). Table?2 gives the boiling points of liquid Materials?B–D at 1?atm; the heat absorbed refers to the amount of heat that is needed to turn 1?g of a liquid at its boiling point into a gas.Time(sec)Volume of Material A(cm3)?0?2?4?6?81012141618202224111362714065416768119461,0811,2161,3511,541Table 1Figure 1MaterialBoiling point(°C)Heat absorbed(cal)BCD131928500610270Table 2Based on Figure?1, Material?As temperature increased the fastest during which of the following time intervals?/sampletest/science/sci_06.htmlA.?0–?2 sec/sampletest/science/sci_06.htmlB.?2–12 sec/sampletest/science/sci_06.htmlC.?12–22 sec/sampletest/science/sci_06.htmlD.?22–24 secBased on the passage and Table?1, what was the density of liquid Material?A ?/sampletest/science/sci_06.htmlF.?0.5 g/cm3/sampletest/science/sci_06.htmlG.?1 g/cm3/sampletest/science/sci_06.htmlH.?5 g/cm3/sampletest/science/sci_06.htmlJ.?10 g/cm3Suppose 1?g of Material?D at –10°C is heated at the rate of 10?cal/sec and kept at 1?atm until all of the liquid is vaporized. Based on Figure?1 and Table?2, a plot of Material?Ds temperature versus time would be best represented by which of the following graphs?/sampletest/science/sci_06.htmlA.?/sampletest/science/sci_06.htmlB.?/sampletest/science/sci_06.htmlC.?/sampletest/science/sci_06.htmlD.?Table?1 and Figure?1 best support which of the following hypotheses about the temperature and volume of Material?A??(Note: Pressure is assumed to stay constant.)/sampletest/science/sci_06.htmlF.?If liquid Material?A is in contact with gaseous Material?A and the volume of the gas increases, the gass temperature will increase./sampletest/science/sci_06.htmlG.?If liquid Material?