close-up view of a white, lined notebook page containing handwritten notes, a blue pen, and an orange electronic device

close-up view of a white, lined notebook page containing handwritten notes, a blue pen, and an orange electronic device. The notes, predominantly in blue ink, include chemical formulas such as C2H2 + H2O → CH3CH and C6H6, alongside numerical data like '176/10' enclosed in a box. Cyrillic script is present, with words like 'алкохола' (the alcohol), 'етанол' (ethanol), and 'ацеталдехид' (acetaldehyde), appearing in the context of chemical reactions, as well as the name 'Семен'. Some text in blue ink is scribbled out, and distinct scribbles are also present in red ink. A blue pen lies along the left edge of the page. An orange, compact electronic device, likely an earbud case, rests on the upper right section of the page, partially covering some notes. The device features 'Alex' engraved in a script font on its surface. The specific location in Burgas, Bulgaria, cannot be determined from the visual information within the image.