{"id":20,"date":"2024-04-04T07:50:45","date_gmt":"2024-04-04T04:50:45","guid":{"rendered":"https:\/\/sisu.ut.ee\/keemiaabc\/42-lahuse-koostise-arvutused-0\/"},"modified":"2024-06-13T00:54:38","modified_gmt":"2024-06-12T21:54:38","slug":"42-lahuse-koostise-arvutused-0","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/keemiaabc\/42-lahuse-koostise-arvutused-0\/","title":{"rendered":"4.2. Lahuse koostise arvutused"},"content":{"rendered":"<div class=\"WordSection1\">\n<p style=\"border: none;\"><span style=\"line-height: 150%;\"><span lang=\"ET\"><span style=\"line-height: 150%;\"><span style=\"color: black;\">Alati ei saa keemias valmistada lahuseid kaalumise teel. Kuna suur osa lahusest on lahusti, mis tavap\u00e4raselt on vedelik, siis on seda otstarbekam m\u00f5\u00f5ta m\u00f5\u00f5tesilindriga. Kuid kui tahta valmistada kindla massiprotsendiga lahust, on vajalik ruumala pealt \u00fcle minna massile \u2013 siin tulebki appi tihedus. <\/span><\/span><\/span><\/span><\/p>\n<p style=\"border: none; text-align: center;\"><\/p><div class=\"ratio ratio-16x9 mb-3\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--16x9\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n<h6 style=\"border: none; text-align: center;\"><span style=\"line-height: 150%;\"><span lang=\"ET\"><span style=\"line-height: 150%;\"><span style=\"color: black;\">Allikas: <\/span><\/span><\/span><\/span><a title=\"\" href=\"https:\/\/youtu.be\/ZAyQWKmeo6Y\" target=\"_blank\" rel=\"noopener\" data-url=\"https:\/\/youtu.be\/ZAyQWKmeo6Y\"><span style=\"line-height: 150%;\"><span style=\"color: #0563c1;\">https:\/\/youtu.be\/ZAyQWKmeo6Y<\/span><\/span><\/a><\/h6>\n<p style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Enne selle teema l\u00e4bimist tuleta endale meelde, et<\/span><\/span><\/span><\/p>\n<h5>Massiprotsenti tohib v\u00f5tta ainult lahuse ja tema komponentide massidest.<\/h5>\n<p>Lahuse massiprotsent (p) n\u00e4itab, kui suure osa kogu lahuse massist moodustab lahustunud aine mass<\/p>\n<p>m(lahus) \u2013 100%<\/p>\n<p>m(aine)\u00a0\u00a0\u2013 p;<\/p>\n<p style=\"margin-left: 40px; text-align: center;\">$p=\\frac{m(aine)}{m(l\\mspace{0mu}ahus)}\\times 100%$<\/p>\n<p>Lahus koosneb lahustist ja lahustunud ainest, seega<\/p>\n<p style=\"margin-left: 40px; text-align: center;\">$m(lahus)=m(lahusti)+m(lahustunud\\ aine)$<\/p>\n<p style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Kindlasti j\u00e4ta meelde, et <\/span><\/span><\/span>massiprotsenti tohib v\u00f5tta ainult lahuse ja tema komponentide massidest.<\/p>\n<h5><a href=\"https:\/\/youtu.be\/g8VARSS1FRY\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"168\" height=\"130\" class=\"alignnone wp-image-64\" style=\"width: 60px; height: 46px; float: right;\" title=\"screenshot_2022-02-11_at_13.55.20.png\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/546\/screenshot_2022-02-11_at_13.55.20.png\" alt=\"video\"><\/a>Korda videost \u00fcle, kuidas arvutada lahuse protsendilist koostist.<\/h5>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69dc491b9a7e3-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69dc491b9a7e3-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69dc491b9a7e3-collapse\">\u00dclesanne 1<\/button>\n        <\/h2>\n        <div id=\"accordion-69dc491b9a7e3-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69dc491b9a7e3-heading\">\n            <div class=\"accordion-body\">\n<\/div>\n\n\n<div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n\n\n<p><\/p><\/div>\n        <\/div>\n        <\/div>\n    <\/div>\n<ul>\n<li style=\"border: none; margin-top: 0cm; margin-right: 0cm; margin-bottom: 0cm;\"><span style=\"line-height: 101%;\"><span lang=\"ET\"><span style=\"line-height: 101%;\">Tihedus n\u00e4itab \u00fchikulise ruumalaga ainekoguse massi ning te<span style=\"color: black;\">ma valem on <\/span><\/span><\/span><\/span>$\\mathbf{}\\rho=\\frac{m}{V}$<span style=\"line-height: 101%;\"><span lang=\"ET\"><span style=\"line-height: 101%;\"><span style=\"color: black;\">, kus <\/span><\/span><\/span><i><span lang=\"ET\">\u03c1\u00a0<\/span><\/i><span lang=\"ET\"><span style=\"line-height: 101%;\"><span style=\"color: black;\">t\u00e4histab tihedust, m massi ning V ruumala.<\/span><\/span><\/span><\/span><\/li>\n<li style=\"border: none; margin-top: 0cm; margin-right: 0cm; margin-bottom: 0cm;\"><span style=\"line-height: 101%;\"><span lang=\"ET\"><span style=\"line-height: 101%;\"><span style=\"color: black;\">Tiheduse enim kasutatavaks \u00fchikuks koolikeemias on g\/cm<\/span><\/span><\/span><sup><span lang=\"ET\"><span style=\"line-height: 101%;\"><span style=\"color: black;\">3<\/span><\/span><\/span><\/sup><span lang=\"ET\"><span style=\"line-height: 101%;\"><span style=\"color: black;\">, massi \u00fchikuks on g ning ruumala \u00fchikuks cm<\/span><\/span><\/span><sup><span lang=\"ET\"><span style=\"line-height: 101%;\"><span style=\"color: black;\">3<\/span><\/span><\/span><\/sup><span lang=\"ET\"><span style=\"line-height: 101%;\"><span style=\"color: black;\">.<\/span><\/span><\/span><\/span><\/li>\n<\/ul>\n<h5><a href=\"https:\/\/youtu.be\/NLFpowHVRDI\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"168\" height=\"130\" class=\"alignnone wp-image-64\" style=\"width: 60px; height: 46px; float: right;\" title=\"screenshot_2022-02-11_at_13.55.20.png\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/546\/screenshot_2022-02-11_at_13.55.20.png\" alt=\"video\"><\/a>Korda videost \u00fcle, kuidas lahendada tihedusega seotud arvutus\u00fclesandeid.<\/h5>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69dc491b9a7e8-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69dc491b9a7e8-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69dc491b9a7e8-collapse\">\u00dclesanne 2<\/button>\n        <\/h2>\n        <div id=\"accordion-69dc491b9a7e8-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69dc491b9a7e8-heading\">\n            <div class=\"accordion-body\">\n\n\n<div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n\n\n<p><\/p><\/div>\n        <\/div>\n        <\/div>\n    <\/div>\n<p style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Arvutus\u00fclesannete lihtsamaks lahendamiseks v\u00f5id <\/span><\/span><\/span><span lang=\"ET\"><span style=\"line-height: 102%;\">tegutsemisjuhiseks<span style=\"color: black;\"> v\u00f5tta j\u00e4rgnevad sammud:<\/span><\/span><\/span><\/p>\n<ol>\n<li style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Loe \u00fclesande tekst m\u00f5ttega l\u00e4bi.<\/span><\/span><\/span><\/li>\n<li style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Jooni tekstis alla k\u00f5ik arvud.<\/span><\/span><\/span><\/li>\n<li style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Omista arvule kindel f\u00fc\u00fcsikaline suurus. Seda on lihtne teha n\u00e4iteks \u00fchiku alusel.<\/span><\/span><\/span><\/li>\n<li style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Kirjuta v\u00e4lja andmed ning otsitav suurus.<\/span><\/span><\/span><\/li>\n<li style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Kirjuta v\u00e4lja valemid v\u00f5i seosed ning kui vaja, avalda otsitav suurus.<\/span><\/span><\/span><\/li>\n<li style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Asenda valemitesse v\u00f5i seostesse arvud ning teosta arvutused.<\/span><\/span><\/span><\/li>\n<li style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Ole valmis, et m\u00f5nikord tuleb \u00fchikuid teisendada.<\/span><\/span><\/span><\/li>\n<\/ol>\n<p style=\"border: none;\"><span lang=\"ET\"><span style=\"line-height: 102%;\"><span style=\"color: black;\">Teeme koos l\u00e4bi kolm\u00a0erinevat \u00fclesannet.<\/span><\/span><\/span><\/p>\n<h2>N\u00e4idis\u00fclesanne 1.\u00a0Lahuse protsendilise koostise arvutamine<\/h2>\n<table class=\"table table-hover\" style=\"width: 100%;\" border=\"0\" cellspacing=\"1\" cellpadding=\"1\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\">1. Loe \u00fclesande tekst m\u00f5ttega l\u00e4bi.<\/td>\n<td>Arvuta v\u00e4\u00e4velhappe protsendiline sisaldus lahuses, kui 200 cm<sup>3<\/sup> lahust (\u03c1 = 1,329 g\/cm<sup>3<\/sup>) sisaldab 51,6 grammi v\u00e4\u00e4velhapet.<\/td>\n<\/tr>\n<tr>\n<td>2. Jooni alla k\u00f5ik arvud, mis on tekstis.<\/td>\n<td>Arvuta v\u00e4\u00e4velhappe protsendiline sisaldus lahuses, kui <u>200 <\/u>cm<sup>3<\/sup> lahust (\u03c1 = <u>1,329 <\/u>g\/cm<sup>3<\/sup>) sisaldab <u>51,6 <\/u>grammi v\u00e4\u00e4velhapet.<\/td>\n<\/tr>\n<tr>\n<td>3. Omista arvule kindel f\u00fc\u00fcsikaline suurus.<\/td>\n<td>200 cm<sup>3<\/sup> on lahuse ruumala, 1,329 g\/cm<sup>3<\/sup> on lahuse tihedus ning 51,6 g on aine mass.<\/td>\n<\/tr>\n<tr>\n<td>4. Kirjuta v\u00e4lja andmed.<\/td>\n<td>\n<p>V(lahus) = 200 cm<sup>3<\/sup><\/p>\n<p>\u03c1(lahus) = 1,329 g\/cm<sup>3<\/sup><\/p>\n<p>m(aine) = 51,6 g<\/p>\n<p>p = ?<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>5. Kirjuta v\u00e4lja seosed ja valemid.<\/td>\n<td>\n<p>m(lahus) \u2013 100%<\/p>\n<p>m(aine) \u2013 p<\/p>\n<p>$\\rho=\\frac{m}{V}$<\/p>\n<p>Kuna antud \u00fclesande puhul on m (aine) teada, kuid m (lahus) pole teada, saame viimase leida lahuse tihedust ja ruumala kasutades. Selleks avaldame tiheduse p\u00f5hivalemist massi: $m=\\rho \\times V$<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>6. Asenda arvud ja teosta arvutused.<\/td>\n<td>\n<p>K\u00f5igepealt leiame kogu lahuse massi:<\/p>\n<p>$m=\\rho \\times V=1,329\u00a0 g\/cm^{3}\\times 200\u00a0 cm^{3}=265,8\u00a0 g$<\/p>\n<p>Seej\u00e4rel saame leida juba lahuse massiprotsendi:<\/p>\n<div>\n<p>m(lahus) \u2013 100%<\/p>\n<p>m(aine)\u00a0\u00a0 \u2013 p<\/p>\n<p>265,8 g \u2013 100%<\/p>\n<p>51,6 g\u00a0\u00a0\u00a0 \u2013 p<\/p>\n<p>$p=\\frac{51,6 g\\times 100%}{265,8 g}\\approx 19%$<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"border: none;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">J\u00e4rgnevalt on toodud \u00fclesannete lahendused alates punktist\u00a04.<\/span><\/span><\/span><\/p>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69dc491b9a7ea-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69dc491b9a7ea-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69dc491b9a7ea-collapse\">\u00dclesanne 3<\/button>\n        <\/h2>\n        <div id=\"accordion-69dc491b9a7ea-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69dc491b9a7ea-heading\">\n            <div class=\"accordion-body\">\n\n\n<div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n\n\n<p><\/p><\/div>\n        <\/div>\n        <\/div>\n    <\/div>\n<div>\n<h2>N\u00e4idis\u00fclesanne 2. Lahustunud aine massi arvutamine lahuses<\/h2>\n<table class=\"table table-hover\" style=\"width: 100%;\" border=\"0\" cellspacing=\"1\" cellpadding=\"1\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\">\u00dclesanne:<\/td>\n<td><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">Kui palju on 500 cm<\/span><\/span><sup><span lang=\"ET\"><span style=\"color: black;\">3<\/span><\/span><\/sup><span lang=\"ET\"><span style=\"color: black;\"> 20% lahuses soola, kui lahuse tihedus on 1,43 g\/cm<\/span><\/span><sup><span lang=\"ET\"><span style=\"color: black;\">3<\/span><\/span><\/sup><span lang=\"ET\"><span style=\"color: black;\">?<\/span><\/span><\/span><\/td>\n<\/tr>\n<tr>\n<td>Andmed:<\/td>\n<td>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">V(lahus) = 500 cm<\/span><\/span><sup><span lang=\"ET\"><span style=\"color: black;\">3<\/span><\/span><\/sup><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">p = 20%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><u><span lang=\"ET\"><span style=\"color: black;\">\u03c1(lahus) = 1,43 g\/cm<\/span><\/span><\/u><sup><span lang=\"ET\"><span style=\"color: black;\">3 <\/span><\/span><\/sup><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(aine) = ?<\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>Seosed ja valemid:<\/td>\n<td>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(lahus) \u2013 100%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(aine)\u00a0\u00a0 \u2013 p<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\">$\\rho=\\frac{m}{V}$<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>Arvutused:<\/td>\n<td>\n<div class=\"WordSection3\">\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: 150%;\"><span lang=\"ET\"><span style=\"line-height: 150%;\"><span style=\"color: black;\">Kuna antud \u00fclesande puhul pole teada ei aine ega lahuse massi, kuid on antud lahuse tihedus ja ruumala, saame leida lahuse massi. Selleks avaldame tiheduse p\u00f5hivalemist massi: <\/span><\/span><\/span><\/span>$m=\\rho \\times V$<\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">K\u00f5igepealt leiame kogu lahuse massi: <\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\">$m=\\rho \\times V=1,43 g\/cm^{3}\\times 500 cm^{3}=715 g$<\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">Seej\u00e4rel saame leida juba lahustunud aine massi:<\/span><\/span><\/span><\/p>\n<\/div>\n<div class=\"WordSection4\">\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(lahus) \u2013 100%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(aine) \u2013 p<\/span><\/span><\/span><\/p>\n<div class=\"WordSection4\">\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">715 g \u2013 100%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(aine)\u00a0 \u2013 20%<\/span><\/span><\/span><\/p>\n<\/div>\n<p style=\"border: none;\">$m(aine)=\\frac{715 g\\times 20%}{100%}=143\u00a0 g$<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69dc491b9a7ec-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69dc491b9a7ec-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69dc491b9a7ec-collapse\">\u00dclesanne 4<\/button>\n        <\/h2>\n        <div id=\"accordion-69dc491b9a7ec-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69dc491b9a7ec-heading\">\n            <div class=\"accordion-body\">\n\n\n<div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n\n\n<p><\/p><\/div>\n        <\/div>\n        <\/div>\n    <\/div>\n<h2>N\u00e4idis\u00fclesanne 3. Lahuse ruumala arvutamine<\/h2>\n<table class=\"table table-hover\" style=\"width: 100%;\" cellspacing=\"1\" cellpadding=\"1\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\">\u00dclesanne:<\/td>\n<td><span style=\"line-height: 150%;\"><span lang=\"ET\"><span style=\"line-height: 150%;\"><span style=\"color: black;\">52,4 grammi naatriumh\u00fcdroksiidi lahustumisel vees saadi 16%-line lahus (\u03c1 = 1,09 g\/cm<\/span><\/span><\/span><sup><span lang=\"ET\"><span style=\"line-height: 150%;\"><span style=\"color: black;\">3<\/span><\/span><\/span><\/sup><span lang=\"ET\"><span style=\"line-height: 150%;\"><span style=\"color: black;\">). Arvuta lahuse ruumala.<\/span><\/span><\/span><\/span><\/td>\n<\/tr>\n<tr>\n<td>Andmed:<\/td>\n<td>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(aine) = 52,4 g<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">p = 16%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><u><span lang=\"ET\"><span style=\"color: black;\">\u03c1(lahus) = 1,09 g\/cm<\/span><\/span><\/u><sup><span lang=\"ET\"><span style=\"color: black;\">3<\/span><\/span><\/sup><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">V(lahus) = ?<\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>Seosed ja valemid:<\/td>\n<td>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(lahus) \u2013 100%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(aine)\u00a0\u00a0 \u2013 p<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\">$\\rho=\\frac{m}{V}$<\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: 150%;\"><span lang=\"ET\"><span style=\"line-height: 150%;\"><span style=\"color: black;\">Kuna antud \u00fclesande puhul on teada aine mass ja protsendiline sisaldus, saame leida kohe kogu lahuse massi. Ning seej\u00e4rel tiheduse p\u00f5hivalemist avaldada lahuse ruumala:<\/span><\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\">$V=\\frac{m}{\\rho }$<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>Arvutused:<\/td>\n<td>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">K\u00f5igepealt leiame kogu lahuse massi:<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(lahus) \u2013 100%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(aine)\u00a0\u00a0 \u2013 p<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">m(lahus) \u2013 100%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">52,4 g\u00a0 \u2013 16%<\/span><\/span><\/span><\/p>\n<p style=\"border: none; margin-top: 12.0pt;\">$m(lahus)=\\frac{52,4 g\\times 100%}{16%}=327,5\u00a0 g$<\/p>\n<p style=\"border: none;\"><span style=\"line-height: normal;\"><span lang=\"ET\"><span style=\"color: black;\">Seej\u00e4rel leiame lahuse ruumala:<\/span><\/span><\/span><\/p>\n<p style=\"border: none;\">$V(lahus)=\\frac{m}{\\rho }=\\frac{327,5\u00a0 g}{1,09\u00a0 g\/cm^{3}}\\approx 300,5\u00a0 cm^{3}$<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69dc491b9a7ee-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69dc491b9a7ee-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69dc491b9a7ee-collapse\">\u00dclesanne 5<\/button>\n        <\/h2>\n        <div id=\"accordion-69dc491b9a7ee-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69dc491b9a7ee-heading\">\n            <div class=\"accordion-body\">\n\n\n<div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n\n\n<p><\/p><\/div>\n        <\/div>\n        <\/div>\n    <\/div>","protected":false},"excerpt":{"rendered":"<p>Alati ei saa keemias valmistada lahuseid kaalumise teel. Kuna suur osa lahusest on lahusti, mis tavap\u00e4raselt on vedelik, siis on seda otstarbekam m\u00f5\u00f5ta m\u00f5\u00f5tesilindriga. Kuid kui tahta valmistada kindla massiprotsendiga lahust, on vajalik ruumala pealt \u00fcle minna massile \u2013 siin &#8230;<\/p>\n","protected":false},"author":276,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-20","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/pages\/20","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/users\/276"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/comments?post=20"}],"version-history":[{"count":11,"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/pages\/20\/revisions"}],"predecessor-version":[{"id":484,"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/pages\/20\/revisions\/484"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/keemiaabc\/wp-json\/wp\/v2\/media?parent=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}