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.
- 3. A(n) __ reaction happens when chemical bonds give off heat. A. Endothermic B. Exothermic C. Metallic D. Covalent
- Which of the following is a potentially harmful household product? a. cosmetics b. solvents c. medicines d. all of the above Please select the best answer from the choices provided A B c D
- The equation for the formation of hydrochloric acid is shown below. Calculate the energy released by forming bonds in this reaction . Use the table to help you. Enter a number kJ/mol H_(2)+Cl_(2)arrow 2HCl Bond Bond energy (kJ/mol) H-H 436 O=O 498 H-O 464 C-H 413 C=O 803 Nequiv N 945 N-H 391 Cl-Cl 243 H-Cl 432
- The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. This can be gleaned from the third postulate in Datton's series. Magnesium cude decomposes into magnesium and oxygen. If 1209 g of magnesium axide decomposes to form 7.29 g of magnesium,what mass of oxygen gas is also released in the reaction? Express your answer with the appropriate units. View Available Hint(s) Units Submit
- 3.69 A piece of Aluminum foil 1.00cm^2 and 0.550mm thick is allowed react with bromine to form aluminum bromide. (a) How many moles of aluminum were used? (D=2.699g/cm^3) (b) How many grams of aluminum bromide form , assuming reacts completely? (Hint: Write the balanced equation first)