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What is the molar mass of a covalent compound if 0.486 g of it is dissolved in 25.0 mL of water and produces a freezing temperature of -0.40 C?
starting with toluene as the only organic starting material and utilizing an organocopper coupling method
How many different aldols (b-hydroxyaldehydes), including constitutional isomers and stereoisomers,
What is the net redox reaction that occurs when Ag comes into contact with acidic K2Cr2O7? Which metal is the most reactive?
A solution contains Cr3+ ion and Mg2+ ion. The addition of 1.00 L of 1.55M NaF solution is required to cause the complete precipitation of these ions as CrF3(s) and MgF2(s). The total mass of the precipitate is 50.2g.
What maximum length of aluminum foil can be made from 1.10 kg of aluminum?
Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams.
The lighter isotope has an abundance of 67.7%. Calculate the atomic mass of the element X.
14 g of Si reacts with 16 g of O to produce SiO2, the only product, with no reactant left over. How much SiO2 would be produced from 34 g of Si and excess O?
Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
Potassium and oxygen gas react to form potassium oxide. b. Sodium and water react to form sodium hydroxide and hydrogen gas. c. Iron and oxygen gas react to form iron (III) oxide.
A sample that weighs 0.1586 grams contains only sodium chloride and potassium chloride was dissolved in water. It took 22.90 mL of 0.1000 AgNO3 to precipitate all of the chloride present.
A cetain weak acid, HA, has a Ka value of 1.4E-7 A) Calculate the percent ionization of HA in a 0.10 M solution. B) Calculate the percent ionization of HA in a 0.010 M solution
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