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.
- What is the limiting reagent when 56 grams of C_(2)H_(4) react-with 96 grams of O_(2) to produce 88 grams of CO_(2) C_(2)H_(4)+3O_(2)arrow 2CO_(2)+2H_(2)O CO_(2) O_(2) There is not a limiting reagent because the reaction involves stoichiometric amounts of each substance. C_(2)H_(4)
- 8.Convert the following molecular formula to the empirical formula C14N28042H56
- A fast-food company advertises that the pre-cooked weight for its burgers is, on average, 0.2 kg. The company runs a regular quality control test that involves weighing a sample of burgers to see if the burgers are too light or too heavy. If the sample mean weight is significantly different than 0.2 kg then they recycle the entire batch. What are appropriate hypotheses for the company's significance test? Choose 1 answer A H_(0):bar (x)=0.2kg H_(a):bar (x)neq 0.2kg (where is is the average weight of burgers in a sample) B C H_(0):mu neq 0.2kg H_(a):mu =0.2kg where mu is the average weight of all burgers in this batch) D H_(0):mu =0.2kg H_(a):mu neq 0.2kg (where mu is the average weight of all burgers in this batch)
- 6. Gas reaction stoichiometry - combining volumes What is the final volume if 20 L methane reacts completely with 20 L oxygen CH_(4)(g)+2O_(2)(g)arrow CO_(2)(g)+2H_(2)O(l) At 100^circ C and 2 atmospheres a) 15L b) 10L C 20L d) 30L
- 12. The first step in the industrial manufacturing of nitric acid is the catalytic oxidation of ammonia. 4NH_(3(g))+5O_(2(g))arrow 4NO_((g))+6H_(2)O_((g)) The reaction is run using 824g of NH_(3) and excess oxygen, calculate how many moles of NO are formed. 13. If the same reaction from# 12 is run using 824 gof NH_(3) and excess oxygen, calculate the molar quantity of water produced. (Excess exypen you won't run out of O_(2) The reoction will be complete when you use up oll the NH_(2) __ 14. Oxygen was discovered by Joseph Priestly in 1774 when he heated mercury(II)oxide and it decomposed into mercury and oxygen. 2HgO_((s))arrow 2Hg_((s))+O_(2(g)) (A) Calculate how many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O_(2) (B) Calculate how many moles of mercury are p produced when you also produce 125 gof O_(2) __ =
