CHEM 230L _ exp 2. Recrystallization

When 1.54 of a certain molecular compound X are dissolved in 55. g of benzonitrile (c,H,CN), the freezing point of the solution is measured to be - 17.8 °C. Calculate the molar mass of x. If you need any additional information on benzonitrile, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. x10

please solve for a b and c. thanks

Draw structural formulas for organic products A and B in the window below. -CI Li pentane H₂O A B • Draw only products having the organic portion of the original alkyl halide. • Draw carbon-lithium bonds using the single bond tool. If a structure has a copper-lithium bond, do not draw the lithium. • Separate products from different steps using the →>> sign from the drop-down menu. ? n [ ChemDoodleⓇ

The dose makes the poison. Calculate the total volume of pure ethanol in just one Ethanol is highly toxic if it is consumed in large quantities. 23.5 fl. oz. (695 mL) can of American malt liquor, which is 12% volume per volume (v/v) ethanol. Although it is the second least toxic of the five alcohols discussed in this case, the ingestion of large quantities of Enter your answer in milliliters. ethanol is not safe. One serious problem with ethanol consumption is how the quantity is conveyed to the consumer. For example, American malt liquor can be sold pure ethanol: mL in 23.5 fl. oz. (695 mL) cans and is 12% volume per volume (v/v) ethanol. Although these cans are labeled as containing multiple servings, many young people consider one can to be a single serving. Drinking two cans of this beverage can result in an accidental overdose of ethanol. Two cans may not seem like much until you do the math.

26) Organic chemistry subject, please provide the correct solution for the following.

Use the flow chart and chemical structures shown to answer the question below. X, Y, and Z in diethyl ether • add HCI (aq) • separate HN. но Вох 1 Вох 2 NH2 CH: organic phase aqueous phase X Y Z • add NaOH (aq) • separate • add NaOH (ag) • add diethyl ether • separate Воx 5 Вох 6 aqueous phase Вох 3 Вох 4 organic phase aqueous phase organic phase • add HCI (aq) • add diethyl ether • separate T Воx 7 Вох 8 organic phase aqueous phase Which compound(s) will be found in Box 4 layer? [Choose all that apply] n Y

*Enumerate the classes of organic derivatives of water that are soluble in concentrated H2SO4

Draw structural formulas for organic products A and B in the window below. -CH₂CI Li pentane Cul B • Draw only products having the organic portion of the original alkyl halide. • Draw carbon-lithium bonds using the single bond tool. If a structure has a copper-lithium bond, do not draw the lithium. Separate products from different steps using the → sign from the drop- down menu.

1. Which IMF or IMFs are correlated with molar mass? Describe this correlation 2. Heptane, hexane, and pentane are hydrocarbons. Rationalize the evaporation data of these substances based the type(s) of IMFs present in each and the relative strengths of these. 3. Ethanol, methanol, 1-propanol, and 2-propanol are alcohols. Rationalize the evaporation data of these substances based the type(s) of IMFs present in each and the relative strengths of these. (Hint: How are these molecules alike and how are they different?) 4. 1-propanol and 2-propanol are isomers, substances having the same chemical formula. Is the evaporation data for these substances the same or different? If different, can you account for why this may be the case from a comparison of the Lewis structures of each substance and the IMFs present in each substance? Explain. 5. Acetone and 2-propanol are chemically interconvertible. Reduction (by the addition of the equivalent of H2) of acetone yields 2-propanol. Conversely,…

O ORGANIC FUNCTIONAL GROUPS Predicting the products of symmetric alcohol dehydration Predict the missing product of this organic reaction: OH H+ + H₂O www-awu.aleks.com Specifically, in the drawing area below draw the skeletal ("line") structure of P. Click and drag to start drawing a structure. 'U X

Oo.105. Subject  :- Chemistry

Rank the following compounds in order of increasing boiling point, putting the compound with the lowest boiling point first. QUESTION 3 0000 OH OH AI > | > ||| > || | < || < ||| < IV IV < | < || < ||| ||| < || < | < |V OH LOH HO IV 10+ III

In diluting acid solution, which of the following statements are correct?   I.    Add the acid into distilled water to dilute the acid solution II.   Add distilled water into acid to dilute the acid solution III.  Use serological pipette in transferring acid into a beaker containing distilled water IV.  Use serological pipette in transferring distilled water into a beaker containing acid     II and IV     I and IV     I and III     II and III

can you answer the question #1 and #2.

I need a lab intro and conclusion for this homework

Classify the compounds as either more soluble in water or more soluble in nonpolar organic solvent.

1-butanol yields 1-bromobutane in the presence of concentrated sulfuric acid and an excess of sodium bromide. CH3CH2CH2CH2OH (l) → CH3 CH2CH2CH2Br (l) If 15.89 mL of 1-butanol produced 12.23 g of 1-bromobutane, the percentage yield of the product equals: (Assume the density of 1-butanol is 0.81 g/mL, the molar mass of 1-butanol is 74 g/mol, and the molar mass of 1-bromobutane is 137 g/mol.) %

A. Identify the name of the functional group where the given organic compounds belong (alcohol, ether, aldehyde, ketone, carboxylic acid, ester, amine) 1. H H Br H H -C C-H H H H 2. H H Н—с H -5- H H N- H- 3. H H -нн I-

Organic Chemistry Lab - Differentiate petroleum ether and sulfuric ether in terms of solubility in water - Differentiate petroleum ether and sulfuric ether in terms of composition - Differentiate petroleum ether and sulfuric ether in terms of boiling point

Normal boiling point of ethanol (C2H5OH) is 78 °C, and of propanol (C3H7OH) is 97 °C. a. Explain the reason for the difference in boiling points of these two alcohols. b. When the underline methyl group in propanol, CH3CH2CH2OH, is replaced with a hydroxyl group (HOCH2CH2OH), boiling point of the molecule increases to 197 °C. Explain the reason for observed increase in the boiling point.

Organic Reactions. You MUST write the complete reaction by chemical formulas eg. CH3-CH=CH2 + H2 O →................   1.///      3,3-dimethyl pentene   + H2 O     →     2. ///    2-methy Propanol + IOI     →     3. ///     Cyclopentanone + IHI     →     4. ///  Ethy 2- bromo pentanoate  +  H2 O     --------→   (Hydrolysis)