Clasified in Homeworks of Geography of Primary.
Written at May 16, 2010 on 
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Clasified in Homeworks of Geography of Primary.
Written at May 16, 2010 on English with a size of 21,271 bytes.
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Clasified in Homeworks of Medicine and Health of Primary.
Written at June 21, 2010 on English with a size of 12,411 bytes.
En la determinación del contenido en ac.acético de un vinagre comercial por el método volumetrico se prodeció de la siguiente forma: se toman 10ml de vinagre y se llevan a un matraz y se aforan a 250ml. Se toman 50ml y se colocan en un erlenmeyer de 250ml diluyendolos en 50 ml de agua se añaden 2 gotas de fenolftaleina y se valora con la disolución de NaOH de concentración 0.100N hasta virage de indicador de incolo-rosa. Obteniendose los siguientes resultados: 16.6, 16.4, 16.7 como valores coherentes ml de NaOH gastados. Calcular el contenido acido del vinagre expresando el resultado en gr de ac. Acetico por cada 100ml de vinagre.
V.M=16.6ml---0.016l 0.016*0.100=0.0016eq de NaOH gastados. Habia 0.0016 eq CH3-COOH en 50ml. Habia 0.0016*5=0.008 eq CH3-COOH en 250ml de disolución.0.008 eq CH3-COOH en 10 ml de vinagre
0.008-----10ml X=0.08 eq CH3-COOH
X---------100ml
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Written at May 16, 2010 on English with a size of 54,997 bytes.
Clasified in Homeworks of History of Primary.
Written at April 29, 2010 on English with a size of 11,313 bytes.
1la ecnomia dls añs dorads a la crsis.ntr1945y1973 s prdujo 1crcmient q afcto dsigualmnt a ls distnts paiss.el papl d kyns s pued rsmir n ls siguients idas:-1:el objtiv d la ecnomia:buskda d flicida scial rfljad en plno emplo y n lpaz scial. n 1dmocracia avnzdal stad db intrvnir xra solucionr ls problms.l fin s mjorarl funcionamient dl mrado.2-el pib:las politiks statals dbn abrdar la ecnomia ncionl cmo 1tdo, lindikdr fndamntal d la riqza d 1 pais s l pib.3-lapolitik fiskl:atras d sta,l stad stablc y rcauda impusts,sgun kynsl dficitstatal n s prjudicial;si s exignmayors cntribcions a ls q +posen y mnors a ls +dsfavorcids, s stablc 1sistma d justicia scial q fortalc la dmokrcia.4-la politik mntaria:l stad rgula l dinro y su tipo d en3 atrvs d ls bancs cntrals y puedlvr la cntidad d dinro n circulacion y bjarl tipo d en3 si dsa q aumntn ls crdits bnkrios,ls invrsions y l cnsum gnrl.5-ls intrkmbios cmrcials:era ncsario q la encomias d ls dstints paiss s pusiern d acuerd,sin rcurrir al protccionsm,era prcis crar 1mnd y 1s organisms intrnacionals q rgulasn ls cambios fijs d mndantr paiss y abndonarl oro cmo patron 1ivrsl d intrkmbios, la firma d 1srie d acuerds intrnacionals impdiria q ls arancls d kda pais fuern d+iad alts y obstaculizranl cmrcio
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Clasified in Homeworks of Other subjects of Primary.
Written at July 14, 2010 on English with a size of 40,609 bytes.
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Clasified in Homeworks of Biology of Primary.
Written at May 31, 2010 on English with a size of 5,778 bytes.
PTERIDOFITAS-caracteristicas:Samambaias,clorofilas a e b (pigmentos),Material de reserva amido,Carotenoides (carotenos e xantofilas).TRansporte: atraves de vasos condutores: Xilema:transporte ascendente,agua + sais minerais...Floema: folhas,,assimilados > prod fotossintese q gera carboidratos,lipideos e proteinas. Importancia: formadora das 1ª florestas, turfa=carvao/petroleo.*origem atraves dos musgos.adapatações a vida terrestre:Cuticula, estomatos, cél condutoras, caule, folha e raiz.Reprodução: assexuada:esporófito > esporangeos > libera esporos > origem aos gametofitos ( masc e fem- gameta - zigoto).A geração duradoura é atraves de esporofitos. Sexuada: Anterozoides (anterideos)...Oosfera (arquegonio).
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Written at June 15, 2010 on English with a size of 663 bytes.
THE POLAR BEAR´S NAME IN LATIN IS URSUS MARITIMUS,MEANIN SEA BEAR.IT IS VERY COLD WHERE POLAR BEAR LIVE.THE POLAR BEARIS THE LARGEST MEATHING ANIMAL ON LAND. THE MALE WEIGHS FROM 350 TO 650KG AND HE IS TWO AND HALFTO THREE METERS LONG.A POLAR BEAR´S SKIN IS BLCK BUT IT´S FUR HAS NO COLOUR IT LOOCK WHITE WHEN THE SUN SHINE ON THE ICE.IT´S HAS BIG FEET SO IT CANSTAND EASLY ON THEIR,THE POLAR BEARS LIKES TO LIVE ALONE.IT WALKS LONG DISTANCES,SOMETIMES 30 KM A DAY.THE BEAR EATS FISH.THE FEMALE BEAR USUALLY HAS TWO BABIES,OR CUBS,ARE BORN IN NOVREMBER.SOMETIMES THE CUBS DIE IN THEIR FIRST YEAR.THERE ARE ONLY ABOUT 25,000POLAR BEARS ALIVE TODAY
Clasified in Homeworks of English of Primary.
Written at June 15, 2010 on English with a size of 663 bytes.
THE POLAR BEAR´S NAME IN LATIN IS URSUS MARITIMUS,MEANIN SEA BEAR.IT IS VERY COLD WHERE POLAR BEAR LIVE.THE POLAR BEARIS THE LARGEST MEATHING ANIMAL ON LAND. THE MALE WEIGHS FROM 350 TO 650KG AND HE IS TWO AND HALFTO THREE METERS LONG.A POLAR BEAR´S SKIN IS BLCK BUT IT´S FUR HAS NO COLOUR IT LOOCK WHITE WHEN THE SUN SHINE ON THE ICE.IT´S HAS BIG FEET SO IT CANSTAND EASLY ON THEIR,THE POLAR BEARS LIKES TO LIVE ALONE.IT WALKS LONG DISTANCES,SOMETIMES 30 KM A DAY.THE BEAR EATS FISH.THE FEMALE BEAR USUALLY HAS TWO BABIES,OR CUBS,ARE BORN IN NOVREMBER.SOMETIMES THE CUBS DIE IN THEIR FIRST YEAR.THERE ARE ONLY ABOUT 25,000POLAR BEARS ALIVE TODAY
