Chemistry Homework Assistance
QuestionAI's chemistry problem solver is a middle school chemistry tutoring tool that summarises key chemical reactions and equations in real-time, featuring a robust learning system to empower even those with a weak foundation in chemistry.
You needn't fret over the elemental properties of the periodic table anymore. Here, you can effortlessly access chemical reactions and reaction principles corresponding to each element. Deductive reasoning from microscopic phenomena to discern the original structure of molecules and atoms is a research technique we staunchly champion.
- The compound H_(2)SO_(4) has the name __ sulfuric acid hydrogen sulfide sulfur hydroxide hydrogen disulfide
- Look at the reaction used to produce ammonia below. Calculate the energy released by forming bonds in this reaction. Use the table to help you. Enter your answer as a number mathrm(kJ) / mathrm(mol) [ mathrm(N)_(2)+3 mathrm(H)_(2) arrow 2 mathrm(NH)_(3) ] Bond & Bond energy mathrm(kJ) / mathrm(mol) mathrm(H)-mathrm(H) & 436 mathrm(O)-mathrm(O) & 498 mathrm(H)-mathrm(O) & 454 mathrm(C)-mathrm(H) & 413 mathrm(C)=mathrm(O) & 803 mathrm(N) mathrm(NH) & 945 mathrm(N)-mathrm(H) & 391 mathrm(O)-mathrm(O) & 243 mathrm(H)-mathrm(Cl) & 432
- Tabht 9 shows observations made when lithium, potassium and rubidium react with water. Table 2 Element & }(c) Observations Lithium Sodium & Bubbles slowly Floats Moves slowly Potassium & Bubbles very quickly Melts into a ball Floats Moves very quickly Flame Rubidium & Sinks Melts into a ball Explodes with a flame (d) Give two observations you could make when sodium reacts with water. Write your answers in Table 2. (2)
- 25. How many valence electrons are in an atom of magnesium? a. 5 b. 3 c. 4 d. 2
- How many sigma and pi bonds , respectively , does ethanoic acid have? 8,0 7. 1 6. 1 5,1