Ayuda con la tarea de química
El solucionador de problemas de química de QuetionAI es una herramienta de tutoría de química para escuelas secundarias que puede resumir reacciones y ecuaciones químicas clave para los usuarios en tiempo real y tiene un potente sistema de aprendizaje para que incluso los estudiantes con una base débil puedan dominar la química fácilmente..
Ya no tendrás que preocuparte por las propiedades elementales de la tabla periódica. Aquí podrás acceder fácilmente a las reacciones químicas y principios de reacción correspondientes a cada elemento. Deducir la estructura original de moléculas y átomos a partir de los fenómenos macroscópicos que se pueden observar es una técnica de investigación química que siempre hemos defendido.
- 11. Potassium chlorate decomposes to produce potassium chloride and oxygen gas.
- Search your periodic table for the answers to these questions. __ 1. Which element is number 14 on the periodic table? __ 2. What is the element symbol for californium? __ 3. How many protons are in an atom of bismuth? __ 4. To which element group does argon belong? __ 5. Which element would you expect to have a higher mass: cadmium or zinc? __ 6. What is the atomic mass of carbon? __ 7. What do you call the element series from atomic number 57-71 __ 8. Which element has a symbol that starts with a letter different from the first one in its name: aluminum copper, gold, rhenium? __ 9. Which element has the lowest atomic mass? __ 10.What is the first element with an atomic mass greater than 100 ? __ 11.What is the first basic metal on the periodic table? __ 12.True or false:Tin and antimony are in the same element group. __ 13.What is the heaviest alkali metal? __ 14.How many protons are in an atom of magnesium? __ 15.Which of the following is not a nonmetal: sulfur , oxygen, silicon, nitrogen? __ 16. What is the name of the element with the symbol W? __ 17.Which element has an atomic mass of 106.42 ? __ 18.Astatine belongs to which element group: nonmetal halogen, noble gas? __ 19.What is the element with the symbol Ba? __ 20.Name a letter never used in any element symbol?
- Methylmercury, a common mercury compound, is frequently found in what animal? A fish B cattle C pigs D chickens
- H_(2)SO_(4) Solve for the molar mass of the following compounds. Make sure and show your work and don't forget to put your unit.
- 8. Hydrogen gas +nitrogen gas > Nitrogen trihydride
