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Suppose that 1.08 g of rubbing alcohol (C3H8O) evaporates from a 75.0 g aluminum block.
If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25 C.
A fishing boat accidentally spills 6.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square meters will the oil slick cover?
what purpose does sodium carbonate serve during the extraction of caffeine from tea leaves?
Write a balanced equation and an expression for Ksp for the dissolution of the given ionic compound. Include states-of-matter. CaCO3 balanced equation: solubility expression
Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and bromine occur naturally as mixtures of two abundant isotopes
The spatial relationship between the hydrogen on C-1 and the hydrogen on C-2 in the most stable chair conformation is: gauche, eclipsed with a 0 degree dihedral angle, eclipsed with a 120 degree dihedral angle, anti
Determine the mass of 28.56 mL of acetone and express your answer in grams? also find out the volume, of 6.54 g of acetone and express your answer , in mL?
What is the Henry's law constant for the gas if the partial pressure of the gas in air is .0088 atm?
A syringe containing 1.55ml of oxygen gas is cooled from 95.3C to 0.0C. What is the final volume of oxygen gas
In an experiment to determine the formula of a salt M2( SO4)3 x XH2O a sample of 2.239g of the sample was reacted with BaCl2. After filtration and drying the sample of BaSO4 weight 3.329g
A solution containing both Mn2+ and Cd 2+ is saturated with H2S gas, after which the concentration of H is found to be .30 M. will the sulfides of these ions form a precipitate under these conditions
You are to prepare buffers at pH = 2.8, 4.5, and 7.5. In the 2nd column write the fomulas for the respective weak acid-conjugate base buffer system that is the best choice for each pH from the listed acids
Sulfurous acid, H2SO3, is a weak diprotic acid (pKa,1=1.89 and pKa,2=7.21 at 25oC). What is the pH of 0.121 mol/L H2SO3(aq) at 25oC? Give your answer accurate to two decimal places.
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