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) What two new compounds form if the solutions. AgNO_(3) and NH_(4)OH, were mixed. Circle the new formed compound that would precipitate (insoluble) 12) What is the molarity of the following solution? a) 3.5 mol KCl in 355 mL.of solution b) 12.38 CaF_(2) 350 mL of Solution
- How many valence electrons are there in group 2 elements?
- 1) Match the Definition to the word. A.hydrogen bond 1. when molecules stick to one another B. surface tension 2 molecules that contain oppositely charged ends C.polar 3. special type of cohesion when a gas and a liquid meet causing the top layer of luquid to act like a thin sheet D adhesion E.cohesion 2) Ionic Bonds are between __ c) Metal and Nonmetal a) Two non-metals d) Metalloid and Nonmetal b) Two metals 3) Cations are negatively charged, and Anions are positively charged. a) True b) False b) 4) What subatomic particle(s) exist in the nucleus? a) Electrons c) Neutrons b) Protons d) B and C 5) Circle any of the following that CANNOT be dissolved in water,(more then one correct answer) a) Polar covalent bonds c) Soluble Ionic bonds b) Oil d) Non-polar covalen bonds 6) Hydroxide ion mixed with lead ion (2+) will form a precipitate a) True b) False 7) The amount of substance dissolved in a certain volume of a solvent is __ a) Molarity c) Density b) Concentration d) None of the above 8) The compound AgBr is __ b) Insoluble a) Soluble 9) The compound NaOH is.. __ b) Insoluble a) Soluble 10) The compound Magnesium Sulfate is __ a) Soluble b) Insoluble
- 1) C_(4)H_(10)+O_(2)arrow CO_(2)+H_(2)O 2) AgNO_(3)+HIarrow AgI+N_(2)O_(5)+H_(2)O 3) HBr+Alarrow AlBr_(3)+H_(2) HCl+SO_(2)arrow H_(2)S+H_(2)O+Cl_(2)
- How can you calibrate the dissolved oxygen sensor? By using a water sample from a known oxygen concentration By heating the sensor in a boiling water bath By adjusting the sensor's brightness By manually entering oxygen levels
