File:60. Алкохол во течен азот и негово горење.ogg

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Original file(Ogg multiplexed audio/video file, Theora/Vorbis, length 1 min 0 s, 1,920 × 1,080 pixels, 8.58 Mbps overall, file size: 61.65 MB)

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English: Solid alcohol – preparing it and burning

- When iso-propanol (or other liquid alcohol) is poured in Dewar vessel containing liquid nitrogen, a dense fog is obtained. The iso-propanol and other lower alcohols tend to evaporate easily. The alcoholic vapors in contact with the liquid nitrogen, condense and a thick fog appears. The alcohol that is poured in the nitrogen containing vessel freezes (freezing point of iso-propanol is –89 °C). The solid alcohol can be ignited and at the beginning it burns with almost colorless flame.

Planned and performed by Marina Stojanovska, Miha Bukleski and Vladimir Petruševski, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.
Македонски: Добивање и горење на цврст алкохол

- Кога изопропанол (или друг течен алкохол) ќе се стави во Дјуаров сад во кој има течен азот се создава густа магла. Изопропанолот, како и другите пониски алкохоли, лесно испарува. Алкохолните пари во контакт со течниот азот се кондензираат и се создава густа магла. Алкохолот истурен во садот со течен азот, замрзнува (т.т. на изопропанол е –89 °C). Цврстиот изопропанол, запален гори со, на почетокот, речиси безбоен пламен.

Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје.
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Author Deni Ingilizovski

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Date/TimeThumbnailDimensionsUserComment
current11:12, 3 September 20211 min 0 s, 1,920 × 1,080 (61.65 MB)Dandarmkd (talk | contribs)Uploaded own work with UploadWizard

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Format Bitrate Download Status Encode time
VP9 1080P 1.87 Mbps Completed 11:19, 3 September 2021 2 min 53 s
Streaming 1080p (VP9) 1.87 Mbps Completed 03:48, 13 January 2024 3.0 s
VP9 720P 925 kbps Completed 11:17, 3 September 2021 2 min 23 s
Streaming 720p (VP9) 920 kbps Completed 08:02, 17 January 2024 1.0 s
VP9 480P 511 kbps Completed 11:18, 3 September 2021 1 min 39 s
Streaming 480p (VP9) 507 kbps Completed 23:53, 16 December 2023 1.0 s
VP9 360P 314 kbps Completed 11:17, 3 September 2021 1 min 13 s
Streaming 360p (VP9) 310 kbps Completed 12:52, 17 December 2023 1.0 s
VP9 240P 189 kbps Completed 11:17, 3 September 2021 59 s
Streaming 240p (VP9) 185 kbps Completed 00:38, 9 December 2023 1.0 s
WebM 360P 519 kbps Completed 11:17, 3 September 2021 39 s
Streaming 144p (MJPEG) 734 kbps Completed 03:59, 29 October 2023 4.0 s
Stereo (Opus) 1 kbps Completed 07:54, 12 November 2023 1.0 s
Stereo (MP3) 128 kbps Completed 22:02, 28 October 2023 2.0 s

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