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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.
- Balance the following equations.Empty blanks will be considered an implied "I" __ 14 13. 2N_(2)O_(5)+1H_(2)Oarrow underline ( )HNO_(3) 2_(14) 14. 2CrCl_(2)+4Sn_(2)(SO_(4))_(3)arrow 3CrSO_(4)+2SnCl_(3) 15. 1Ca+1As_(2)arrow 2Ca_(3)As_(2) 16. 3Na_(2)CO_(3)+2AlPO_(4)arrow 2Na_(3)PO_(4)+1Al_(2)(CO_(3))_(3)
- The activation energy of a reaction going on its own is 20 kJ. If the reaction was treated with a catalyst, which would most likely represent the amount of energy needed to start a reaction? 15 kJ 20 kJ 25 kJ 30kJ
- Select all of the following baked goods which are leavened by a physical leavening agent. Yeast bread Croissant D Brownies Whipped cream Pie crust
- What else is produced during the replacement reaction of silver nitrate and potassium sulfate? 2AgNO_(3)+K_(2)SO_(4)arrow Ag_(2)SO_(4)+underline ( ) KNO_(3) 2KNO_(3) K_(2) 2AgNO_(3)
- 1. The fundamental assumption of Avogadro's Law is that: A) All gases have identical molecular weights B) Equal volumes of gases contain equal numbers of molecules C) Gases always expand when heated D) Pressure remains constant in all reactions 2. According to Charles's Law.what happens to the volume of a gas when temperature increases (at constant pressure)? a) Volume increases b) Volume decreases c) Volume stays the same d) Volume becomes zero 3. Boyle's Law states that pressure and volume are: a) Directly proportional b) Inversely proportional c) Not related d) Always equal 4. At constant volume ,if you double the temperature of a gas (in Kelvin), what happens to the pressure? a) Doubles b) Halves c) Stays the same d) Becomes zero 5. Which temperature scale must be used when calculating gas law problems? a) Celsius b) Fahrenheit c) Kelvin d) Rankine