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Calculate the vapor pressure of a solution made by dissolving 89.3 g of urea (molar mass=60.06 g/mol) in 198.5 mL of water at 35 Celsius (the vapor pressure of pure water is at 35 degrees Celsius is given in Change table 5.3. Assume the density of the solution is 1.00g/mL). What is the magnitude of vapor-pressure lowering?
the lower state was the ground state and the upper state was the first excited state for the flame tests of each metal atom you observed,
It is very desirable that pesticides eventually decompose in the environment to give harmless products. Let us assume the half life for the first order decomposition of a certain pesticide is 10.2 years.
The solubility of a gas in water is 0.22 g/L at 20 kPa of pressure. What is the solubility when the pressure is increased to 115 kPa
in the reaction a rarr products a is found to be 0.490 m at t72.0 s and 0.474 m at t82.6 s.what is the average rate of
a flask contains 22.5 g of an unknown liquid initially at 14.0oc. after 2.34 kj of heat are added to the liquid its
When you are trying to calculate molarity, what volume do you use? I have a final volume of NaOH and an initial Volume and volume of NaOH
The total precipitate was dissolved in HCl + HNO3. When the solution thus formed was treated with excess NaOH followed by H2O2, a colorless solution and a reddish brown precipitate were formed. The precipitate was found to be soluble in HCl, H2SO4..
what is the main overall driving force for any spontaneous reaction or
Express your answer in condensed form in order of increasing orbital energy. Write out the electron configurations for:
How many mL of 2.00 M Na2CO3 is diluted with water to prepare 300 mL of 0.500 M Na2CO3
How is the rate of disappearance of ozone related to the rate of appearance of oxygen in the following equation: 2 O3 (g) ? 3 O2 (g) (rate expression)
a 75 ml solution of 0.030 m caoh2 is titrated with 0.035 m hcl. calculate the ph of the mixture after 60 ml of hcl have
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