What observed rotation is expected when a 1.62 M solution of (R)-2-butanol is mixed with an equal volume of a 0.810 M solution of racemic 2-butanol, and the resulting solution is analyzed in a sample container that is 1 dm long? The specific rotation of (R)-2-butanol is –13.9 degrees mL g–1 dm–1. The unit of the answer is in degree, NOT in degrees mL g–1 dm–1.

A 6.210 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 10.34 grams of CO2 and 3.388 grams of H2O are produced. In a separate experiment, the molar mass is found to be 132.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound.

A voltaic cell utilizes the following reaction and operates at 298 K. 3 Ce4+(aq) + Cr(s) 3 Ce3+(aq) + Cr3+(aq)

(a) What is the emf of this cell under standard conditions? V

(b) What is the emf of this cell when [Ce4+] = 2.0 M, [Ce3+] = 0.014 M, and [Cr3+] = 0.011 M? V

(c) What is the emf of the cell when [Ce4+] = 0.56 M, [Ce3+] = 0.82 M, and [Cr3+] = 1.3 M? V

2H_{2(g) +}O_{2 (g)} <=> 2H₂O (g)

the above equilibrium experiences a sudden decrease in pressure. which one of the following will then occur?

1) dec in mole of h2

2) incr in mole of H20

3) incr in mole of 02

4) Total mole would decrease

The answer is 3). Can you explain why

What are the intermolecular forces involved with NH3?

A 35.0-mL sample of 0.150 M acetic acid (CH3COOH) is titrated with 0.150 MNaOHsolution. Calculate the pH after the following volumes of base have been added.

50.0 mL

Express your answer using two decimal places.

have each group make two flash cards with an acid or a base on one side and its cconjugate on other side .Check each other cards and quiz each other unit each group member is proefficient at identify conjugate pairs. explain in brief

Please answer fast

Write the balanced equation for each step in glycolysis (conversion of glucose into pyruvate) and calculate the free energy change (in kJ/mol) for this overall pathway.

The following questions refer to the following system 3.5E2 ml of 3.2 M Pb (NO3)2 and 2.0E2 mL of 0.020 M NaCl are added together. KSP for the chloride is 1.6E-5

a.) determine the ion product?
b.) will precipitation occur?
c.) What is the limiting reagent in the formation of lead chloride?
d.) Determine the equilibrium
concentration of the chloride ion?

As you saw in Part B, the vapor above the cyclohexane-acetone solution is composed of both cyclohexane vapor and acetone vapor. What mole fraction of the vapor above the solution, X cy (vapor) , is cyclohexane?

A solution is composed of 1.10 mol cyclohexane (P ∘ cy =97.6 torr ) and 2.30 mol acetone (P ∘ ac =229.5 torr ). What is the total vapor pressure P total   above this solution? i found the solution

1) Different hybridizations give rise to different vibrational frequencies. Terminal
alkynes have C-H stretching frequencies of about 3300 cm-1; alkene C-H stretching
frequencies are around 3100 cm-1, and alkane C-H stretching frequencies are
around 2900 cm-1. Explain these observations

NEED THE COMPLETE AND CLEAR SOLUTION thanks

An isotonic solution will produce an osmotic pressure of 7.84 atm measured against pure water at human body temperature (37.0 °C). How many g of sodium chloride must be dissolved in a liter of water to produce an isotonic solution?

Laboratory 11B: Methyl Orange

1) What changes to the synthetic sequence used for methyl orange would need to be made to generate FD&C Orange #1 (see lab manual for the structure). (Some structure drawings will be helpful when answering this question).

2) Some fabrics stained strongly with methyl orange while others stained poorly. Using one of the strongly stained fabrics as an example, explain what features of that material result in it being strongly stained.

3) Explain why methyl orange changes color at different pH.

Gold forms a substitutional solid solution with silver. Compute the number of gold atoms per cubic centimeter for a silver-gold alloy that contains 10 wt% Au and 90 wt% Ag. The densities of pure gold and silver are 19.32 and 10.49 g/cm3, respectively.

how would you convert potassium oleate soap to the corresponding fatty acid?