4. The boiling points of the four compounds: ethane (CH3CH3), ethanol (C2H$OH), dimethyl ether (CH3OCH;) and ethylene glycol (CH2OH-CH2OH) follow the order: 1). ethanol > ethane > dimethyl ether> ethylene glycol 2). ethylene glycol > ethanol > dimethyl ether > ethane 3). ethane > dimethyl ether > ethanol > ethylene glycol 4). ethylene glycol > dimethyl ether > ethanol > ethane 5. The process of fractional distillation can be used for the liquids having sufficient: 1). differences in their boiling points 2). differences in their melting points 3). differences in their solubility 4). differences in their viscosity 6. Three liquids A, B and C boil at 353 K, 403 K and 503 K, the vapor pressures of the three liquids at room temperature would follow the order: 1). A>B >C 2). В > А> C 3). A > С> В 4). C>A>B

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Enter a balanced equation for the complete combustion of liquid C3H6OC3H6O. Express your answer as a chemical equation. Identify all of the phases in your answer.

Please help me to understand how to get the answer please I’m confused

in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working!!!!!!!

Draw the starting alkene that would lead to these major products under these conditions. Drawing H₂ Pd/C 11

What would be an appropriate shelf-life, t90, for this drug (in days) in this solution?

19-21

2. An 84 kg University of Toledo groundskeeper who is spraying a 100 mg/L solution of the insecticide dieldrin (MW = 381; logP = 4.56) on some trees exposes 100 cm“ of his skin to the solution over a 4 hr period. Dieldrin has a half-life of about 6 months, a volume of distribution of about 40 L/kg, and a dermal permeability of about 3 x 10° cm/sec. (a) Estimate the absorption rate during the exposure period assuming the blood concentration is much lower than the skin concentration (i.e., take the blood level to be zero in the skin absorption equation). (b) Estimate how it takes after exposure begins for the groundskeeper's plasma dieldrin levels to reach 1 ng/L. (c) Estimate the maximum plasma dieldrin concentration in ng/L that will occur in this groundskeeper due to this exposure. (d) Estimate how long it will take after exposure ends for the groundskeeper's plasma dieldrin levels to drop back down to 1 ng/L. %3D

Answer choices for blank 1(there is only one correct answer for each blank): A B C D E F G H J Answer choices for blank 2(there is only one correct answer for each blank): A B C D E F G H J