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Hydroquinone is an antioxidant that is also used as a photographic reducer and developer. The normal boiling point of hydroquinone is 310°C. Calculate the pressure at which hydroquinone will boil at 200°C given that its Hvap is 73.38 kJ/mol.
The reading on a mercury manometer at 25 deg C (open to the atmosphere at one end) is 56.38 cm. The local acceleration of gravity is 9.832 m s-2.
Calculate the molarity of a solution of glycerol made by dissolving 63.000 glycerol at 15 in enough water to make 300.00 of solution.
A chemist has 4 moles of C2H6 to use in the study. How many moles of O2 will be needed in order to react all of the C2H6?
The precipitate formed was washed and dried .Its mass was 0.287g.Find the mass of NaCl in the initial sample.
determine the number and type of donor atoms in the ligand. Options include: a) 4 N and 2 O, b) 2 N and 2 O, c) 4 N and 4 O, d) 2 N and 4 O
How many atoms of manganese (atomic mass 54.94 g/mol) ar contained in 6.16 attograms
How many mL of a 0.8 M NaOH(aq) solution are required to make 500 mL of a solution with pH=12.50?
If a solution containing 48.91 g of mercury(II) acetate is allowed to react completely with a solution containing 7.410 g of sodium sulifide how many grams of a solid precipitate will be formed?
Arrange the following molecules in the expected order of increasing boiling points: carbon tetrabromide, CBr4; butane, CH3CH2CH2CH3; fluorine, F2
Some solid remained in the beaker after stirring with HCl. You washed the filter paper with ketone, which caught on fire and the filter paper was scorched
You are given a worked wooden item from an archaeological dig believed to date to during the last glaciation. As such, the artifact would be another piece of evidence.
Recrystallization from 95% ethanol gave yellow crystals. What is the overall mechanism for this reaction including all arrows, the identification of the electrophile and nucleophile, and all charges?
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