act科学 题目6

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1、PassageVISupposethat1 gram (g)ofMaterial A,initiallyaliquid,iskeptinacylinderfittedwithapistonataconstantpressureof1 atmosphere (atm).Table 1andFigure 1,respectively,showhowMaterial A'svolumeandtemperaturevaryovertimeasMaterial Aabsorbsheatatarateof10 caloriespe

2、rsecond(cal/sec).Table 2givestheboilingpointsofliquidMaterials B–Dat1 atm;theheatabsorbedreferstotheamountofheatthatisneededtoturn1 gofaliquidatitsboilingpointintoagas.Time(sec)VolumeofMaterialA(cm3) 0 2 4 6 81012141618202224111362714065416768119461,0811,2161,35

3、11,541Table1Figure1MaterialBoilingpoint(°C)Heatabsorbed(cal)BCD131928500610270Table21.BasedonFigure 1,Material A'stemperatureincreasedthefastestduringwhichofthefollowingtimeintervals?1.A.  0– 2sec2.B.  2–12sec3.C. 12–22sec4.D. 22–24sec2.BasedonthepassageandTable

4、 1,whatwasthedensityofliquidMaterial A?1.F. 0.5g/cm32.G. 1g/cm33.H. 5g/cm34.J. 10g/cm33.Suppose1 gofMaterial Dat–10°Cisheatedattherateof10 cal/secandkeptat1 atmuntilalloftheliquidisvaporized.BasedonFigure 1andTable 2,aplotofMaterial D'stemperatureversustimewould

5、bebestrepresentedbywhichofthefollowinggraphs?1.A. 1.B. 2.C. 3.D. 2.Table 1andFigure 1bestsupportwhichofthefollowinghypothesesaboutthetemperatureandvolumeofMaterial A ?(Note:Pressureisassumedtostayconstant.)1.F. IfliquidMaterial AisincontactwithgaseousMaterial Aa

6、ndthevolumeofthegasincreases,thegas'stemperaturewillincrease.2.G. IfliquidMaterial AisincontactwithgaseousMaterial Aandthevolumeofthegasincreases,thegas'stemperaturewilldecrease.3.H. WhenthetemperatureofgaseousMaterial Aincreases,itsvolumewillincrease.4.J. Whent

7、hetemperatureofliquidMaterial Aincreases,itsvolumewillincrease.3.Suppose1 gsamplesofliquidMaterialsA–Darejustbeginningtoboil.Ifeachoftheliquidsabsorbsheatattherateof10 cal/secwhilekeptat1 atm,whichoftheliquidswillbethefirsttobecompletelyturnedintoagas?1.A. Mater

8、ialA2.B. MaterialB1.C. MaterialC2.D. MaterialD