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A flask contains 0.500molmol of liquid bromine, Br2\rm Br_2. Determine the number of bromine molecules present in the flask.
Determine the ionization energy (in kilojoules per mole) of a metallic element if light of wavelength 67.2 nm ejects electrons with a speed of 2165 km/sec.
the balloon reaches an altitude of 100m, where the pressure was 658 mmHg and the temperature was -8c. what was the volume in liters of the ballon at these conditions?
Does this verify that only a single detergent compound is in the extract. What specifically can you do to gain more information about the composition of the shampoo extract
A certain gaseous oxide of sulfur has an effusion rate that is 0.707 times the effusion rate of oxygen gas. What is the most likely molecular formula of this oxide?
If 28 mL of a .537 M NaOH solution is needed to neturalize 20 mL of a carbonic acid (H2CO3) solution, what is the molarity of the carbonic acid? (Write a balanced chemical reaction first.)
The water solubilities of oxalic acid and sodium oxalate at room temp are 10g/100ml and 3.7g/100ml respectively. Could you prepare oxalic acid by adding HCl to a solution of sodium oxalate, cooling it to room temp, and filtering the resulting mixt..
Calculate the of 0.280L of a 0.450M NaHSO3 - 0.285M Na2SO3 buffer before and after the addition of the following substances.
The visual raw meat color was red(outside) and brown(inside) and when mixed with NaNO2 and NaNO3 the color changed to slight maroon and medium brown and pink.
solution is diluted to a total volume of 278 mL. A 139-mL portion of that solution is diluted by adding 155 mL of water. What is the final concentration?
At 25C the acid dissociation constant for formic acid is 6.9x10-4. Calculate DG for this reaction. R=8.31x10-3 kj/K) Can you please help me work this problem.
A patient's blood test shows that she has elevated levels of LDL (low density lipoproteins) at 4.12 mmol/L. Convert this concentration to units of molarity (mol/L).
1.20 moles of a nonelectrolyte is dissolved in 1000 g of water. What is the value of the freezing point depression of this solution, given that Kf for water is 1.86 C/m?
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