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If 10.6 ml of (±)-a-phenylethylamine (MM=121.2 d=.94) are reacted with .083moles of (+)-tartaric acid then:
a) how many grams of solid NaOH (MM=40.0) are needed to convert the(-)-amine diastereomeric salt into its free amine?
b) how many mL of a 2.5 M NaOH solution are needed to convert the(-)-amine diastereomeric salt into its free amine?
Solubility constant for is 8.1E-12. When is in equilibirum with its ions in saturated solution. The concentration of silver ions.
Draw a hypothetical titration curve and label the points where .5 equivalents, 1.0 equivalents, 1.5 equivalents, and 2.0 equivalents of base have been added. What is the relative concentration of [H2A], [HA-], and [A2-] at each of those points?
The decomposition of hydrogen peroxide is first order in H2O2. 2H2O2 -----> 2H2O + O2 The rate constant for this reaction at 20 C is 1.8 * 10^-5 s^-1
Fiber is an indigestible cellulose product that passes through our system without getting metabolized. If your burned food contained a lot of fiber, how would you expect your calorie value to the "posted" calorie value on the box
The balences in the lab can weigh a maximum of 220.000 g at once. if a beaker has a mass of 86.4329 g, what is the maximum volum of water
Four samples of gas - O2, CO2, Ar, and He - are available at the same temperature. Rank the gases in increasing order of their particles' average velocity, beginning with the slowest.
What is the difference in reaction rate between a single step bi molecular reaction dye and NaCIO
the same bulb is placed in a heated oven, and the pressure is measured as 648 mm Hg. What is the temperature of the oven in °C?
calculate the final temperature of a mixture of 130.0 g of ice initially at -22.5 Celsius and 310.0 g of water initially at 80.5 Celsius.
determine the numbers of oxygen molecules are required for each molecule of c6h12o6 glucose that is oxidized if glucose
a student pumped some helium gas into a balloon. when this balloon was connected to an open ended U-tube containing some oil (density=9.18 g cm-3 the oil was displaced 112 mm towards the atmosphere. what is the pressure of the helium inside this b..
Calculate the change in molar enthalpy and molar internal energy when carbon dioxide is heated from 15 degrees Celsius to 37 degrees Celsius
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