Скачать с ютуб Finding EMPIRICAL FORMULA & MOLECULAR FORMULA | Chemistry with Cat в хорошем качестве

Finding EMPIRICAL FORMULA & MOLECULAR FORMULA | Chemistry with Cat

Finding EMPIRICAL FORMULA & MOLECULAR FORMULA | Chemistry with Cat Empirical Formula is the most popular EXAM question ever! Empirical Formula and Molecular Formula can be found from mass percent composition! They have the same RATIO, but empirical formula is the simplest form of that ratio, and molecular formula is the the actual formula for a specific molecule! To find empirical formula: First, assume 100g in the sample and find the moles of each atom. Then divide by the lowest amount of moles to set them in a ratio. Then, to get whole numbers, DO NOT ROUND, multiply all numbers by 2, or 3, or 4, until you get whole numbers! To get molecular formula: find the molar mass of the empirical formula and see if it matches the molar mass of the molecule. If it matches, then it is the molecular formula! If not, you multiply the empirical formula until you get the right molar mass! REVIEW HOW TO FIND MASS PERCENT HERE:    • How to Calculate MASS PERCENT (mass p...   REVIEW HOW TO FIND MOLES FROM MASS HERE:    • MOLES, MASS, & MOLAR MASS | Chemistry...   REVIEW HOW TO FIND MOLAR MASS:    • MOLES, MASS, & MOLAR MASS | Chemistry...   Practice problems and answers can be found on the Chemistry with Cat Instagram:   / chemwithcat   Cat has a BMSc and MSc. SHE HAS BEEN IN YOUR SHOES AND STRUGGLED ON THOSE EXAMS! She currently tutors university and high school chemistry, and she's here to help YOU! She creates quick videos that teach you everything you need to know to not only pass chemistry but ace it! Science is fun! Subscribe to this channel for more lessons!    / @chemistrywithcat   For individual tutoring contact Cat at: [email protected] Intro and Outro Music composed and recorded for this channel by my very talented brother: Andrew Valle #empiricalformula #molecularformula #masspercent