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Calculate the mass of nitrogen dissolved at room temperature in an 96.0 home aquarium. Assume a total pressure of 1.0 and a mole fraction for nitrogen of 0.78.
How many grams of magnesium chloride, MgCl2, would be required to prepare a 0.2019 m MgCl2 solution by combining this compound with 0.2050 L of water (assume a density of 1.00 g/mL)?
Which of these substances would have the strongest cohesive forces in combination with the greatest molecular mobility?
Ether usually known as Ethoxyethane, is often used to extract organic compounds from aqueous solution. Which of its properties A does notfavour its selection for this use?
Since cereal sample may have other materials other than Fe that absorbs light. Using cereal sample as the blank can eliminate these absorption so that the transmittance was solely due to Fe.
What total volume of chloroform would be required to remove 99% of the cocaine from 100 mL of water in three successive extractions?
25.0 mL of ethanol (density = 0.789 g/mL) initially at 7.4°C is mixed with 32.1 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
we then titrated both the aqueous and organic layer. for organic layer, we used 0.1M (S2O3)2- for aqueous layer, we used 0.01M (S203)2- find concentration [I]2 (subscript 2) for aqueous and organic layer
How many liters of oxygen,O2,are required for the complete combustion of 1/2 mole of pentane,C5H12 at standard conditions
a. For a weak acid with a pKa of 6.0, show how you would calculate the ratio of acid to salt at pH 5. b. Suppose you have just added 100 mL of a solution containing 0.5 mol of acetic acid per liter to 400 mL of 0.5 M NaOH. What is the final pH?
Chlorine-36 is a B emitter, with a half-life of 3.0*10^5years. How many beta particles are emitted in 1.5 min from a 5.4mg sample Chlorine-36?
Find the maximum temperature (for cases a and b) that can be attained in the burning of methane at constant P according to the reaction CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g)
Aldol condensation: why must aldehyde contain none of corresponding acid? In the aldol condensation with benzaldehyde + acetone (NaOH, ethanol) --> dibenzalacetone
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