Chemistry

Please help me answer the two questions attached.

Newman projections and conformations

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The number of different constitutional isomers

1. The number of different constitutional isomers that can be drawn for C2H4Br2 is equal to a.1 b. 2 c.3 d. 4 2. The order of boiling points of the simple alkanes CH4, C2H6, and C3H8 is a. CH4 < C2H6< C3H8 b. CH4 > C2H6> C3H8 c. C2H6 < CH4 < C3H8 d. CH4 < C2H6 > C3H8 3.Which of the following statements about ...continues

Chemistry

1. The C-O-C bond angle (degees) in the compound CH3-O-CH3 is closest to a. 90 b. 109 c. 120 d. 180 2. Which of the following molecules would be expected to be MOST water soluble? a. CH3-CH2-CH2-CH2-CH3 b. CH3-CH2-O-CH2-CH3 c. HOCH2-CH2-CH2OH d. ClCH2-CH2-CH2Cl 3. The relationship between CH3CH2OH and HOCH ...continues

Which of the following molecules has NO net molecular dipole?

1. Which of the following molecules has NO net molecular dipole? a. CH3OH b. CH2O c. CH3Cl d. H2C=CH2 2. Which of the following molecules can hydrogen bond to another of the same compound? a. CH3CH2OCH2CH3 b. CH3CH2COOCH3 c. (CH3CH2)2CHOH d. CH3CH2COCH2CH3 3. What term best describes the relationship betwe ...continues

The C-O-C bond angle (degrees) in the compound CH3-O-CH3 is closest to

1. The C-O-C bond angle (degrees) in the compound CH3-O-CH3 is closest to a. 90 b. 109 c. 120 d. 180 2. Which of the following molecules would be expected to be MOST water soluble? a. CH3-CH2-CH2-CH2-CH3 b. CH3-CH2-O-CH2-CH3 c. HOCH2-CH2-CH2OH d. ClCH2-CH2-CH2Cl 3. The relationship between CH3CH2OH and ...continues

Chemistry

1. Draw the structure of bicyclo [3.2.0] heptane. 2. Consider the following compounds: CH3-CH2-CH2-CH2-CH3 CH3-CH2-CH2-NH-CH3 CH3-CH2CH2-CH2OH Predict their relative boiling points (rank from low (1) to (3)). Explain answer in terms of the intermolecular forces involved. 3. Draw a three-dimensional sctructure of CH3 ...continues

Chemistry - IUPAC Naming

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Chemistry - Structure Naming

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SN1 and SN2 reactions for (2S, 3S)-2-bromo-3-phenylpentane with KOH

Treatment of (2S, 3S)-2-bromo-3-phenylpentane with KOH can lead to different products, depending on the reaction pathway. Draw (2S, 3S)-2-bromo-3-phenylpentane and the major product(s) expected for each of the following reaction mechanisms: SN1, SN2. Please indicate the stereochemistry and regiochemistry clearly.