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.

The hybridization of carbon atoms 1,2, and 3 in the following respectively H_(2)C=CH-CH_(3) 1 2 3 A- sp, sp, and sp^2 B- sp,sp, and sp3 C- sp2,sp2 and sp3 D- sp^2,sp^3 , and sp^3 i. C ii. D iii. A iv. B

Worked example of displacement value Prepare eight suppositories (1g each), each containing 200 mg bismuth subgallate: For eight suppositories, 0.2gtimes 8=1.6g drug. The displacement value for bismuth subgallate is 3.0 g. Three grams of drug displaces 1 g base;therefore 1.6 g drug displaces (1.6/3) 0.53 g base. The amount of base required for eight medicated suppositories is 8g-0.53g=7.47g EXAMPLE. You receive a prescription for ten morphine sulfate 10 mg suppositories. You decide to prepare 12 suppositories to allow for any losses during preparation, using theobroma oil as the base. How many grams of theobroma oil are required to prepare 12 suppositories, each ontaining morphine sulfate 10 mg sufficient to fill a 2 g mould? The displacement value for morphine sulfate in theobroma oil is 1.6. Give your answer to 2 decimal places 1) Amount of morphine sulfate required for 12 suppositories=10mgtimes 12=120mg=0.12g 2) Amount of base required to prepare 12 unmedicated 2g suppositories=2gtimes 12=24g 3) As the displacement value for morphine sulfate is 1.6, this means that 1.6 g will displace 1g of base, so by simple proportion: Morphine sulfate (g) 1.6 12.12 ?=(1times 0.12)/(1.6)=0.075g Theobroma Oil (g) 1 ? =gt 0.12g of morphine sulfate will displace 0.075 g of base 4) Therefore the amount of base for 12 medicated suppositories=24-0.075=23.925g Answer=23.93grams to 2 decimal places

20-Which of the following(s) is/are correct? I-In a precipitation technique, molecules are according to difference in their solubility. II- In a distillation technique, molecules are se according to difference in their boiling point III- In liquid-liquid extraction technique,molecu separated according to their partitioning betwe immiscible liquids, A) Only II B) Only III C) Iand III D) II and III E) I,II and III

18-Which of the following(s) is /are correst? 1- Peak tailing of chromatographic peak occur when the amount of sample loaded onto the column is too high. II- Column efficiency increases as the no of theoretical plates increases III-Retention factor in colum chrom intography is the amount of time a solute spends in the stationary phase relative to the time it spends in mobile phase. A) Only II B) Iand II C) I and III D) II and III E) I, II and III

15-Which of the following(s) is hare comest? 1. In Ina-Exchange separation technique negatively- chargedices of the solution attached on cation exchange resin 11-A substance that affects an analytical signal or the background is called an interference. III.As the occentration of solute which remains in aqueous solution decreases extraction efficiency increases. A) Only I B) Only I C) I and II D) I and III E) II and III