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.
- Benedict's reagent is added to a sugar solution. There is no change and a blue soluti is observed. After boiling in HCl and neutralizing with sodium hydrogen carbonate, more Benedict's reagent is added. An orange/red precipitate is formed. What can be concluded from these experiments? A non-reducing monosaccharide is present A reducing disaccharide is present There is no reducing sugar present A non-reducing disaccharide is present
- The ions that are produced when a weak acid dissociates in water are more stable than ions produced from strong acids. True False
- 4 Suggest how the student could use chromatography to show there were four colours in the printer ink. [1 ma __
- Printer ink is a mixture of chemicals. A student used chromatography to investigate the colours in a printer ink. The student put a spot of the printer ink on the start line. Figure 4 shows the results. Figure 4 Not to scale Explain why the red colour did not move from the start line. [2 mark __
- 3 5 Catalytic converters are fitted to car exhausts to reduce the amount of pollution from cars. Carbon monoxide and nitrogen dioxide (NO_(2)) react in a catalytic converter. Nitrogen and carbon dioxide are produced. Write a balanced equation for the reaction. [2