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A 50ml sample of a white dinner wine required 21.48 ml of .03776 M NaOH to achieve a phenolphthalein end point. Express the acidity of the wine in terms of grams of tartaric acid (150.09g/mol) per 100 ml.
A mass of solid aluminum is at its melting point. what is the maximum mass of this sample that can be melted by 120 kJ of heat? ( Cp=0.900J/gc ; Hfus= 35.7 KJ/g
Hexane is used to wash the solid product of a Sn1 carbocation reaction why is ice cold hexane used? and why does it need to be ice cold?
How much 0.20mol/L sodium hydroxide should be combined to this buffer to raise the pH to 5.1? If the same amount of 0.20 mol/L sodium hydroxide were combined to 250mL of deionized H 2 O, Determine New pH?
Oxygen at 150 K and 41.64 atm has a tabulated specific volume of 4.684 cm3/g and a specific internal energy of 1706 J/mol.
Giving examples give the mechanisms of Aldol condensation between two molecules of aldehydes and two molecules of ketones
Determine the empirical formula of a compound containing 77.3% silver, 7.4% phosphorus and 15.3% oxygen.
Electrons are ejected from sodium metal by any light that has a wavelength shorter than 544 nm. What is the kinetic energy of an electron
mass of magnesium = .021 grams initial volume = 50.00 mL final volume = 25.6 volume of liquid displaced = 24.4 volume of hydrogen gas produced = 24.4?
In the lower troposphere, ozone is one of the components of photochemical smog. It is generated in air when nitrogen dioxide, formed by the oxidation of nitrogen monoxide from car exhaust, reacts by the following mechanism.
How much heat in Joules is required to raise the temperature of 1.000 kg of water by 60.0 oC? Cp,m (H2O) = 75.29 J mol-1 K-1. Molar Mass (H2O) = 18.015 g mol-1.
Describe the development of the modern periodic table. Include contributions made by Lavoisier, Newlands, Mendeleev, and Moseley.
describe an experiment that you could perform in lab that would provide the data so you could calculate the Ka value for sulfamic acid, HSO3NH2.
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