Kimya Ödev Yardımı
QuetionAI‘nin kimya problemi çözücüsü, temel kimyasal reaksiyonları ve denklemleri kullanıcılar için gerçek zamanlı olarak özetleyebilen ve zayıf bir temele sahip öğrencilerin bile kimyada kolayca uzmanlaşabilmesi için güçlü bir öğrenme sistemine sahip olan bir ortaokul kimya ders aracıdır.
Artık periyodik tablonun temel özellikleri hakkında endişelenmenize gerek yok. Burada her elemente karşılık gelen kimyasal reaksiyonlara ve reaksiyon prensiplerine kolaylıkla ulaşabilirsiniz. Moleküllerin ve atomların orijinal yapısını, görülebilen makroskobik olaylardan çıkarmak, her zaman savunduğumuz bir kimya araştırma tekniğidir.
- 12) If the Ecell value of galvanic cell below is 1.50 V. What should be the concentration or ragi? Wnat should be the concentration of [Ag']? Zn(s)vert Zn^+2(0.018M)Vert Ag'(ldots M)vert Ag(s). (E^0Zn^+1/z_(n)^m-0.763V;E^circ Ag'/Ag=0.799V) A) 0.009 M B) 0.012 M C) 0.016 M D) 0.024 M E) 0.083 M 13) Which of the following statement(s) is/ are correct? I- Oxidizing agent is an agent that causes another species to be oxidized, but itself is reduced. II- During the reduction molecules loss oxygen atom. III- In a galvanic cell spontaneous chemical reaction generate electrical energy. A) Only I B) Only III C) I and III D) II and III E) I, II and III 14) Which of the following statement(s) is/ are correct for the reaction below. Pt,H_(2)(580 torr)vert HCl(0.0016M)Vert Pd^2(0.28 M)vert Pd(s) ( E^circ Pd^n/Pd=0.987V)(760torr:1atm) 1. The reaction type is spontancous II. Ecell=0.809V III. Keq=2.19times 10^33 A) Only I B) I and II C) Iand III D) II and III E) I,II and III 15) Which of the following(s) may cause an instrumental deviations in Beer's law? 1. Polychromatic light source II- Stray light III- Cell/Cuvette variability A) Only II B) Only III C) I and II D) II and III E) I, II and III
- 1) Which of the following(s)is /are correct? 1. Phosphoresence is a photoluminsseence process in which atoms or molecules are excited by absorption of electromagnetic radiation. The excited species then relax back to the ground state in 10^-8 seconds by giving up their excess energy as photons. II. The difference in absorption and emission wavelengths in fluorescence process is called a Stokes shift. III. Vibrational relaxation takes place during collisions between excited molecules and molecules of the solvent. A) Only I B) Only II C) I and II D) II and III E) I, II and III 2) List the following ionic species as electron donor in descending order. I- Ba^+2(E^circ Ba^2+/Ba_((s))=-2.906V II- Cd^+2(E^circ Cd^2+/Cd_((g))=-0.403V) III Co^+3(E^circ Co^3+/Co^2+=1.808V) IV -Cu^+2(E^circ Cu^2+/Cu_((s))=0.337V) A) Igt IIgt IIIgt IV 3) What is the difference between absorption and emission spectrum? A) An absorption spectrum is produced when atom release its excess amount of energy, while emission spectrum is produced when atom excited by EM radiation. B) An absorption spectrum is obtained by transmitting EM radiation through a substance, while an emission spectrum is spectrum of EM radiation that given off by a substance. C) An absorption spectrum is produced when atom excited by thermal energy source, while an emission spectrum is obtained when atom is stimulated by chemical energy. D) An absorption spectrum is obtained when excess energy of atom/molecule released as a thermal energy, whereas an emission spectrum is obtained when excess energy of atom/molecule released as a photon. 4) What is the oxidation number of Sulphur atom in Na_(2)S_(2)O_(3) (Na: 1 A group, O:6A group). A) -2 B) +4 C) +2 D) +3 E) -1
- Skatol bileşigi C, H ve N olmak ủzere 3 element icermektedir.Kütlece % 82 ,40 C ve % 6,92 H'dir. Molektil ve kaba formủlü ayni olduguna gõre molekúil agrly kaçtur? (C:12, H:1, N:14) a. 78 b. 134 c. 131 d. 117 e. 105
- Soru 1. Bir kentte Ocak ayi boyunca 200 defa sülfür dioksit (SO_(2)) olçümũ yapilmiş ve ortalama SO_(2) miktari 135mg/m^3 bulunmustur. Bu kentte Ocak ayma ilişkin SO_(2) miktarinin normal dagilima uydugu ve varyansinin 98 oldugu biliniyor. a. Bu kent için Ocak ayi ortalama SO_(2) miktarina ilişkin bir % 90 gũven araligi bulunuz. b. Bu kent için Ocak ay1 ortalama SO_(2) miktarma ilişkin bir % 95 gũven araligi bulunuz.
- It is compose d of 40.92 percent carbon (C),4.58 percent hydrogen (H) , and 54.50 percent oxygen (O) by mass. Determine its empirical formula.