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.
- Quention 3 points) Asolution of H_(3)C_(6)H_(5)O_(7) at 1.8 M is diluted from its original volume of 407 mL by adding 116.5 mL M1=underline ( )M V1=underline ( )mL V_(2)=underline ( )mL What is the resulting concentration of this solution (M2) __ M (Answer with 2 significant figures) Blank 1 Blank 2 Blank 3 Blank 4
- Question 2 (2 points) How much 0.075 M NaCl solution can be made by diluting 450 ml of 9.0 MNaCl? __ ml What is the final volume in LITERS? __ L Blank 1 square Blank 2 square
- Name: Predicting Products Quiz (You are not expected to balance the equations.) Synthesis Sodium bromide+chlorinearrow Formula: NaBr+Cl2
- Question 1 (2points) Why does crushing a solute into smaller pieces increase the rate at which it dissolves in a solvent? All of these It increases the surface area, allowing more particles of solute to come in contact with the solvent. e It increases the kinetic energy of the solvent. d None of these It increases magnetic attraction It makes particles of solvent move more quickly contacting solute particles more often.
- Question 3 (2 points) Shelen measures Sig of KCl and stira it into 100mL of water at room temperature. He notices some crystals still on the bortom that will not more, and eventually decides that the remaining crystals will not dissolve regardless of how long they are agitated. What conclusion can Shelen reasonably make based on his results? Agitation has no effect on solubility. b Temperature has no effect on solubility c KCl has a maximum molarity. Beyond that,no further crystals can be dissolved KCl is nonpolar KCl is a nonelectrolyte Ket in not soluble in water. 9 Steferis sample of KC was impure (contaminated)
