Chemistry

What are allotropes

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What Are Allotropes EXPERT ANSWER Allotropes are different forms of an element that exist in the same physical state but have different structures or arrangements of atoms. These variations in structure give rise to different properties and characteristics for each allotrope. Elements can exhibit allotropy when their atoms can arrange themselves in multiple ways to …

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Question 5 Matching Type: Classify the following organic compounds. Match Left column Compounds shown below with the Right column A. CH3CH2CH=CHCH2CH3 CH3 B. CH3 C. CH3CH2CH-CHCH2CH3 O -CH3 D. E. CH3CH2NHCH2 F. CH3-C-OCH2CH3 Question 6 Matching Type: Classify the following organic compounds. Match Left column Compounds shown below with the Right column G. CH3CH2CH2C-H с H. HC=C-CH2CH3 CH2CH2CH2 I. 1 OH ОН J. CH3CHCH2CH2CH3 C=0 OH K. CH3(CH2) 10CHE L. CH3 CH3-C–CH2-C-NH2 CH3 Identify/Choose all possible functional group(s) found maybe repeated but you can only click one. OH CH3 -CECH d. Norethynodril (oral contraceptive) O ketone O hydrocarbon alkene O aldehyde O alcohol hydrocarbon alkyne Identify/Choose all possible functional group(s) fc maybe repeated but you can only click one. (disre C. HN -CH3 HOCH2 Azdothymidine (medication for HIV patents) N3 amide O alcohol O ether amine ester Identify/Choose all possible functional group(s) f maybe repeated but you can only click one. b. HO NH2 8 -СН-СН-С-ОН 6- HO L-dopa (drug in treating Parkinsons disease) ether carboxylic acid amine amide alcohol Identify/Choose all possible functional group(s) maybe repeated but you can only click one. C-OH . Por Joget a. aspirin ester O ketone carboxylic acid O aldehyde ether Question 1 Identify/Choose all possible functional group(s) found in th maybe repeated but you can only click one. O=0 C-OH a. Logo -C-CH3 aspirin ester ketone carboxylic acid aldehyde O ether Identify/Choose all possible functional group(s) fo maybe repeated but you can only click one. (disreg C. HN -CH3 HOCH2 Azdothymidine (medication for HN patents) N3 O amide alcohol ether amine ester 3 Question 2 Identify/Choose all possible functional group(s) fo maybe repeated but you can only click one. b. HO NH2 HO CH2CH-C-OH L-dopa (drug in treating Parkinsons disease) ether carboxylic acid amine O amide O alcohol Question 4 Identify/Choose all possible functional group(s) found ir maybe repeated but you can only click one. OH CH3 CECH d. wood Norethynodril (oral contraceptive) ketone O hydrocarbon alkene O aldehyde O alcohol O hydrocarbon alkyne

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Halothane, C2HBrClF3, is a nonflammable, nonexplosive, and nonirritating gas that is commonly used as an inhalation anesthetic. The total pressure of a mixture of 15.0 g of halothane vapor and 24.5 g of oxygen gas is 845 mm Hg. What is the partial pressure of each gas?

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Halothane, C2HBrClF3, is a nonflammable, nonexplosive, and nonirritating gas that is commonly used as an inhalation anesthetic. The total pressure of a mixture of 15.0 g of halothane vapor and 24.5 g of oxygen gas is 845 mm Hg. What is the partial pressure of each gas? Phalothane = mm Hg Poxygen = mm Hg EXPERT ANSWER No of mol of Halothane = …

Halothane, C2HBrClF3, is a nonflammable, nonexplosive, and nonirritating gas that is commonly used as an inhalation anesthetic. The total pressure of a mixture of 15.0 g of halothane vapor and 24.5 g of oxygen gas is 845 mm Hg. What is the partial pressure of each gas? Read More »

a) Calculate the polarization of a BaTi03 crystal (See the following Fig.). The structure transforms from cubic to tetragonal below the Curie point with lattice parameters c and conductivity to 4.06A and 3.97 A respectively. The displacement of titanium ion is opposite to that of oxygen ions. The magnitude of displacement is 0.06 A for titanium, 0.06 A for oxygen ions on the side faces and 0.08 A for oxygen ions on the top and bottom faces of the cube. The displacement of barium ions may be neglected.

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Question: a) Calculate the polarization of a BaTi03 crystal (See the following Fig.). The structure transforms from cubic to tetragonal below the Curie point with lattice parameters c and conductivity to 4.06A and 3.97 A respectively. The displacement of titanium ion is opposite to that of oxygen ions. The magnitude of displacement is 0.06 A …

a) Calculate the polarization of a BaTi03 crystal (See the following Fig.). The structure transforms from cubic to tetragonal below the Curie point with lattice parameters c and conductivity to 4.06A and 3.97 A respectively. The displacement of titanium ion is opposite to that of oxygen ions. The magnitude of displacement is 0.06 A for titanium, 0.06 A for oxygen ions on the side faces and 0.08 A for oxygen ions on the top and bottom faces of the cube. The displacement of barium ions may be neglected. Read More »

4. (20 pts.) Below is a liquid-solid phase diagram for a mixture of two components, A and B. 300 750 p=1 700 liquid 650 600 $ 2550 500 450 400 40 350 300 0 01 02 03 04 05 06 07 08 09 1 . (a) For the points labeled through 4 along the vertical line at z = 0.2, provide the number of phases present, a description of each phase, and the mole fraction of B in each phase. (To receive full credit, your descriptions must be clear and unambiguous.) 1 (b) What is the melting temperature of pure A? (C) What is the melting temperature of pure B? (d) What is the eutectic temperature? (e) What is the eutectic composition? (1) What is the freezing point of a liquid with z=0.2?

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EXPERT ANSWER Ans) A) at point 1) – mixture at melting point At point 2)- A is solid and liquid At point 3)- mixture is at freezing point At poin 4)- mixture is solid Mole fraction of B at (z=0.2) = 0.2 B) – from graph we can see Melting point of pure A = …

4. (20 pts.) Below is a liquid-solid phase diagram for a mixture of two components, A and B. 300 750 p=1 700 liquid 650 600 $ 2550 500 450 400 40 350 300 0 01 02 03 04 05 06 07 08 09 1 . (a) For the points labeled through 4 along the vertical line at z = 0.2, provide the number of phases present, a description of each phase, and the mole fraction of B in each phase. (To receive full credit, your descriptions must be clear and unambiguous.) 1 (b) What is the melting temperature of pure A? (C) What is the melting temperature of pure B? (d) What is the eutectic temperature? (e) What is the eutectic composition? (1) What is the freezing point of a liquid with z=0.2? Read More »