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undergraduate thesis
Određivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2023. urn:nbn:hr:149:817680
Zekić, Ema
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Zekić, E. (2023). Određivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:817680

Zekić, Ema. "Određivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:149:817680

Zekić, Ema. "Određivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:149:817680

Zekić, E. (2023). 'Određivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 11 July 2024, https://urn.nsk.hr/urn:nbn:hr:149:817680

Zekić E. Određivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2023 [cited 2024 July 11] Available at: https://urn.nsk.hr/urn:nbn:hr:149:817680

E. Zekić, "Određivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:149:817680

Metadata
TitleOdređivanje stvarne gustoće prašaka uz pomoć laboratorijskog posuđa
Title (english)Determination of true powder density by use of laboratory glassware
AuthorEma Zekić
MentorJelena Macan (mentor)
Committee memberJelena Macan (predsjednik povjerenstva)
Committee memberJasna Prlić Kardum (član povjerenstva)
Committee memberDavor Dolar (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2023-09-05, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Basic Technical Sciences
Abstract
Cilj ovog rada bio je odrediti gustoću praška sastavljenog od staklenih kuglica modificiranom metodom piknometra. Budući da tekućinski piknometar ima jako usko grlo, nepraktičan je za rad s praškastim uzorcima te je u ovom radu gustoća staklenih kuglica određena korištenjem staklene bočice sa čepom i menzure od 10 mL kao improviziranih piknometara. Kao otapalo korišteni su destilirana voda i etanol, a gustoća staklenih kuglica određena je kao aritmetička sredina tri uzastopna mjerenja. Rezultati dobiveni korištenjem staklene bočice i vode kao otapala te korištenjem menzure i oba otapala odgovaraju teorijskoj vrijednosti gustoće od 2,5 g/cm^3. Pritom je najniža standardna devijacija od 0,1823 dobivena korištenjem menzure i vode kao otapala što je i očekivano budući da je menzura graduirano laboratorijsko posuđe za razliku od staklene bočice na kojoj je oznaka proizvoljno urezana dijamantnim nožićem. Na temelju dobivenih rezultata proizlazi da je predstavljena metoda određivanja gustoće staklenih kuglica pomoću improviziranog piknometra pouzdana i dobra alternativa klasičnom piknometru.
Abstract (english)
The purpose of this work was to determine the density of powder consisting of glass beads using a modified pycnometer method. Since the liquid pycnometer has a very narrow neck, it is impractical for working with powder samples. Therefore in this work the density of glass beads was determined using a glass vial with a stopper and a 10 mL graduated cylinder as improvised pycnometers. Distilled water and ethanol were used as solvents, and the density of glass beads was determined as the arithmetic mean of three consecutive measurements. The results obtained using the glass vial and water as solvent and using the graduated cylinder and both solvents correspond to the theoretical density value of 2,5 g/cm^3. At the same time, the lowest standard deviation of 0,1823 was obtained using the graduated cylinder and water as solvent, which is expected since the cylinder is a graduated laboratory vessel, unlike the glass vial on which a mark is arbitrarily engraved with a diamond knife. Based on the obtained results, the presented method of determining the density of glass balls using an improvised pycnometer is a reliable and good alternative to the classic pycnometer.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:817680
Study programmeTitle: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Advanced materials and technologies
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-09-07 07:08:14