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A 12-liter tank contains helium gas pressurized to 160. What size tank would be needed to contain this same amount of helium at atmospheric pressure 1 ATM.
After 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the phosphours 32 ?
A solution (S1) of yellow # 5 has an absorbance far outside the linear region of Beer's law. In order to determine the concentration of this solution
calculate the PH of a buffer solution prepared by dissolving 21.5 g benzoic acid and 37.7g sodium benzoate in 200.0 mL of solution?
Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2C8H18(l) + 25O2(g) ? 16CO2(g) + 18H2O(l) ?H°rxn = -11,020 kJ/mol. Given that ?H°f[CO2(g)] = -393.5 kJ/mol
Determine E° for the reduction half-reaction Ce4+(aq) + e- → Ce3+(aq), given that the cell voltage for the following voltaic cell is E°cell = 1.887 V:
determine the expression for the rate of the reation in terms of the change in concetration of each of the reatants and products.
If 18.26 grams of sulfuric acid are reacted with a large amount of aluminum metal, what volume of hydrogen gas would be produced at STP?
A flask contains 0.230 mols of liquid bromine Determine the number of bromine molecules present in the flask.
You dissolve 650.0 g of sugar (C12H22O11) in 726 mL of water. The density of wat is 1.00 g/mL.
What is the concentration of the HNO3 solution? Your response differs from the correct answer by more than 10%. Double check your calculations. M (b) How many moles of NaOH were in excess after the first addition?
explain how to determine the instantaneous rate of formation of i3- at exactly 20 minutes. draw on the graph above as part of your. explanation.
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.
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