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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.
- Formula 1 point Hydrogen gas and chlorine gas react to produce hydrochlorie acid. underline ( )H_(2)+underline ( )Cl_(2)arrow underline ( )HCl How many liters c HCl are produced in this reaction if 53 O L of chlorine gas is used? Type your answer...
- 7. How many H_(2) molecules are needed to make 4.00 moles of water in the following equation? 2H_(2)+O_(2)arrow 2H_(2)O 2.41times 10^24 E 12.04times 10^23 E 6.02times 10^23 4.82times 10^24 E Clear All
- 6. How many formula units of sodium chloride salt is produced from 18.0 g of sodium? 2Na(s)+Cl_(2)(g)arrow 2NaCl(s) 4.71times 10^23 formula units of NaCl E 9.43times 10^23 formula units of NaCl 2.17times 10^25 formula units of NaCl E 1.08times 10^25formula units ofNaCl
- 15. Which type of reaction takes place in the presence of oxygen gas and produces carbon dioxide and water? a. decomposition b synthesis C. combustion d. double replacement 16. In an experiment,a white solid is mixed into a clear liquid and the following changes were observed. Which of these changes is NOT evidence that a chemical reaction took place? a. The solid dissolved into solution b. The liquid turned blue C. The liquid started bubbling d. Agas was released by the solutions 17. What is the balanced coefficient for AgNO_(3)?underline ( )Cu+underline ( )AgNO_(3)arrow underline ( )Ag+underline ( )Cu(NO_(3))_(2) a. 1 b. 2 C. 4 d. 3 18. What type of reaction is this? 2KClO_(3)arrow 2KCl+3O_(2) a. decomposition b. double replacement C. synthesis d. single replacement 19. Which chemical equation is correctly balanced? (Choose TWO correct answers) a. KClarrow K+Cl_(2) b. 2KClarrow 2K+Cl_(2) C. 4KClarrow 4K+2Cl_(2) d. 2KClarrow K+Cl_(2) 20. Which compound in the following equation is the precipitate? BaCl_(2(aq))+H_(2)SO_(4(aq))arrow BaSO_(4(s))+2HCl_((aq)) a. BaCl_(2(aq)) b. BaSO_(4(s)) C. H_(2)SO_(4(aq)) d. HCl_((aq)) 21. The chemical reaction below would represent a-BaBr_(2)+Na_(3)PO_(4)arrow Ba_(3)(PO_(4))_(2)+NaBr a. double replacement reaction b. synthesis reaction C. single replacement reaction d. decomposition reaction
- 5. Directions Drag and drop the correct answer choice to each answer blank. Or touch the answer choice followed by the answer blank. This balanced equation represents the reaction of Zn and Pb(NO_(3))_(2) Zn+Pb(NO_(3))_(2)arrow Zn(NO_(3))_(2)+Pb When 34 g of Zn reacts with 27 g of Pb(NO_(3))_(2) 12 g of Pb is produced. How many grams of Zn(NO_(3))_(2) are produced? Move the correct numerical answer to the first box, and the correct unit to the second box. :38 square square g/mL