Chemical Formula & Masses | Class 9 Chemistry Unit 1.2.4 & 1.2.5 | Bracket Wala Rule, Ek Baar Mein

Formula ki poori kahani, aur aakhir mein wo waada jo compounds wali video mein kiya tha. Chemical formula sirf do cheezein batata hai: kaun se elements maujood hain, aur un ke atoms kis ratio mein hain. Lekin ratio aur asal number ek cheez nahi hain, aur yahin se empirical aur molecular formula ka farq shuru hota hai. Ek raaz suniye. Benzene ek liquid hai jo petrol mein hota hai. Acetylene wo gas hai jis se welding hoti hai. Dono ka empirical formula bilkul ek hai, C H. Lekin ek C six H six hai aur doosra C two H two. Wohi ratio, alag number of atoms, aur bilkul alag cheez. Phir ionic compounds, jo molecules banate hi nahi. Namak ek crystal jaali hai, aur us ke liye formula unit ki tareef alag hai. Us ke baad mass. Molecular mass, formula mass, aur ethane aur sodium chloride ka poora hisaab, step by step. Aur aakhir mein bracket. Rule sirf ek hai: bracket ke saath jo number likha ho, wo bracket ki har cheez par multiply hota hai. Calcium hydroxide, ammonium sulphite aur iron nitrate, teenon isi ek rule par khul jate hain. Definitions English mein hain, bilkul un alfaaz mein jo paper maangta hai. Samajh Urdu mein hai. CHAPTERS 0:00 Formula ki poori kahani, aur wo waada 0:18 Definition: chemical formula 0:42 Do qismein: empirical aur molecular 0:52 Benzene aur welding wali gas ka raaz 1:10 Definition: empirical formula 1:23 Benzene C H, glucose C H two O 1:39 Ratio kaafi nahi, asal atoms kitne hain 1:51 Definition: molecular formula 2:16 Molecular barabar n into empirical 2:32 Jab dono formulas ek hi hote hain 2:49 Ionic compounds, molecule nahi, crystal 3:06 Definition: formula unit 3:31 Ab formula se mass tak 3:41 Definition: molecular mass, aur ethane ka hisaab 4:15 Definition: formula mass, aur N a C l 4:33 Aur ab wo waada: brackets, aur rule sirf ek hai 4:51 Calcium hydroxide, C a bracket O H two 5:03 Book ka example: ammonium sulphite 5:32 Iron nitrate, aur us ka mass 6:01 Poora system, aur agle video mein ions POORI SERIES, SAHI TARTEEB MEIN Playlist:    • Class 9 Chemistry · KP Board   00 Unit 1 ka poora overview:    • Class 9 Chemistry Unit 1: Fundamentals of ...   01 History of Chemistry, Muslim Period:    • History of Chemistry: Muslim Period | Clas...   02 Branches of Chemistry:    • Branches of Chemistry | Class 9 Chemistry ...   03 Matter, element aur symbols:    • Matter, Elements & Symbols | Class 9 Chemi...   04 Compounds:    • Compounds | Class 9 Chemistry Unit 1.2.1 |...   05 Mixtures:    • Mixtures | Class 9 Chemistry Unit 1.2.1 | ...   06 Atomic number aur mass number:    • Atomic Number & Mass Number | Class 9 Chem...   07 Chemical formula aur masses:    • Chemical Formula & Masses | Class 9 Chemis...   Ratta band. Samajh on. Content KP Board Class 9 Chemistry ke syllabus par mabni hai. Saari explanations, artwork aur animation original hain.