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Question: An aqueous solution of sodium hydroxide is labeled .010 M NaOH. What are the molar concentrations of NaOH, Na+ and OH- in the aqueous solution?
Determining the BOD of a water sample,it was found that the DO level was 9.3ppm before incubation and 6.7 ppm after five days of incubation.what is the BOD of this sample?
Calculate the volume of a pre-made solution of 1-decene (120 ?L) in absolute ethanol (250 ?L) that will afford 0.76 mmol of 1-decene
Empirical formula and molecular formula, 2) Two substances Q and R each have the elemental composition C = 60% h=13.3% 0=26.7% by mass 0.60 grams of each substance occupied a volume of 0.336 liters at 137 Celcius and standard pressure
Bohr's model is used to treat emission lines of hydrogen lamp. It may also be used to study emission lines in mercury lamp or krypton lamp, the other two lamps that are used in this lab.
1.what advantage do calcium chloride pellets have over magnesium sulfate powder. 2.what advantage does decantation have over filtration for small volumes
gaseous sulfur trioxide can be catalytically decomposed by flowing the gas down a heated tube. the reaction depends on
A system consists of 6.00 moles of benzene. It is initially at a temperature of 76.0°C, a pressure of 0.878 bar, and a volume of 534.7 cm3. Calculate the volume of the system at the end of this process.
For a particular process that is carried out at constant pressure, q= 130 kJ and w= -20 kJ. Therefore,
Which one of these types of electromagnetic radiation has the shortest wavelength? infrared, ultraviolet,microwaves, or radio waves
a student was asked to identify an unknown hydrate by following the procedure described in this module. after heating
A soft drink contains 35 mg. of sodium in 316g. of H2O. What is the concentration of sodium in the soft drink in mass percent?
An air sample contains 0.034% . If the total pressure is 765 , what is the partial pressure of
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