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.
- In an EXOTHERMIC reaction, the TEMPERATURE of the SURROUNDINGS __ decreases [ANY of these] increases stays the same
- 4. A student added magnesium ribbon to an excess of dilute sulphuric acid and measured the volume of hydrogen gas produced. The reaction stopped when all the mognesium was used up. The results are shown in the table Time/s & 0 & 10 & 20 & 30 & 40 & 50 & 60 }(l) Volume of gas/cm & 0 & 20 & 32 & 40 & 43 & 45 & 45 a) Calculate the time taken for the volume: (i) To increase from 20 mathrm(~cm)^3 to 40 mathrm(~cm)^3 (ii) To increase from 43 mathrm(~cm)^3 to 45 mathrm(~cm)^3 (2) b) Calculate the change in volume of the gas: (i) Between 0 and 20 seconds (ii) Between 40 and 60 seconds (2) c) Calculate the AVERAGE REACTION RATE, in mathrm(cm)^3 mathrm(~s)^-1 . (i) between 0 and 20 seconds (ii) between 40 and 60 seconds (2)
- Si se produce un incendio en el laboratorio inmediatamente __ Notificar a tu profesor Corre hacia el extintor Echar agua al fuego Abre las ventanas
- Which use of iron is due to its chemical properties? producing colored sparks in fireworks changing from liquid to gas at 2,862^circ C conducting electricity and heat changing from solid to liquid if heated to 1,538^circ C
- Which statement best describes what happens during a chemical change? Both the identity and the properties of a substance change. Some properties of a substance charige, but its identity remains the same. The chemical properties of a substance change, but its physical properties remain the same. The physical properties of a substance change, but its chemical properties remain the same.