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Beaker A Water Initial Mass (g): 2.599 grams Final Mass (g): 2.615 grams
Change in Mass (g)
(final - initial)
0.016 gram
Beaker B
0.15 molar solution NaCl
Initial Mass (g): 2.683 grams
Final Mass (g): 2.701 grams
0.018 gram
Beaker C
0.15 molar concentration of Hickling illume (potassium aluminum sulfate)
Initial Mass (g): 2.838 grams
Final Mass (g): 2.792 grams
0.046 gram
Beaker D
Concentrated solution of sodium chloride (3 molar)
Initial Mass (g): 2.630 grams
Final Mass (g): 2.234 grams
0.396 gram
Calculate and compare the osmolarity (Osmol/L) of beaker B, C, and D. Do the molarities or osmolarities of each solution better support the observed change in mass of each cell?
Explain how many ml of .250MNaOh will it take to neutralize 10.0ml of .100M hydrochloric acid (HCL). Explain how many ml of .250MNaOH will it take to neutralize 10.0ml of .100M hydrofluric acid (HF)
Explain the steps you would follow to make 500 mL of a 0.5 mol/L solution of sodium chloride (NaCl) in the lab.
A weak acid (HA) is found to ionize 17.8% when mixed at a concentration of 0.3 mol/L. What is the value of Ka for this acid?
when 1.48g of mercuric chloride is vaporized in a 1.00 l bulb at 680 k the pressure is 225 mm hg. what is the molar
the human eye is able to detect as little as 2.35 x 10 ^-18 J of green light of wavelength 510 nm. Calculate the minimum number of photons of green light that can be detected by the human eye.
Why do ldehydes and ketones have lower boiling points than alcohols with similar molar mass?? Why are they higher than alkanes?
which of the following electron configurations represent an excited state?
In a separate experiment, it was found that for equal concentrations of element X as well as the standard the response for element X was 0.930 times intense as the standard. Explain what is the concentration of element X in the unknown expressed a..
silver iodide in grams will dissolve in a solution that is a 2.0 x 10^-4 M silver nitrate when the system reaches equilibrium
The combustion of liquid ethanol (C2H5OH) produces carbon dioxide and water. Write a balanced equation for this reaction. After 4.2 mL of ethanol (density = 0.789 g/mL) was allowed to burn in the presence of excess oxygen gas. At the end of the proc..
Explain what is the MOLAR heat of combustion of benzene, C6H6 if combustion of 3.00 g of benzene causes a temperature increase of 5.18 deg C in a bomb calorimeter that has a heat capacity of 8.07 kJ/deg Celsius. (C6H6 = 78.1 g/mol)
When fully submerged, how much force would you have to exert on the string to prevent the bag from sinking further?
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