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What's the central atom for CH3Br, how many bonds are formed, is it polar or nonpolar, what's the direction of electronegativity?
What is the molar concentration of the excess reactant once this reaction has finished? (40%)
A .0678 g sample of tin sulfate was dissolved in dilute HCl and treated with 10% BaCl2 solution. The BaCl4 precipitate weighed .0737 g. Determine the formula of this sulfate of tin.
If you had a mixture of NaCl and Na2CO3, would the action of concentrated H2SO4 enable you to decide whether both Chloride ions and carbonate ions were present
Determine the mass of snow that can be completely melted - Determine the mass of snow (frozen water) that can be completely melted with the application
A sample of urea contains 1.009 g N, 0.145 g H, 0.432 g C, and 0.576 g O. What is the empirical formula of urea?
A solar panel is used to heat water in a tank. How much heat energy is needed to raise the temperature of 1000 L of water from an initial temp of 23 degrees Celsius to a final temp of 65 degrees Celsius
what is the balanced equation for the main reaction? equation for important side reactions? why was ethanol, not methanol, used as the organic solvent?
The wavelength of light emitted if the electron drops from n=5 to n=4 will be shorter than the wavelength of light emitted when the electron falls from n=5 to n=3.
The nutritional calorie (Calorie) is equivalent to 1 kcal. One pound of body fat is equivalent to about 4.1 103 Calories. If an athlete expends 1975 kJ/h, how long does she have to play to work off 1.0 lb of body fat?
A 11.0-L helium tank is pressurized to 26.0 atm. When connected to this tank, a balloon will inflate because the pressure inside the tank is greater than the atmospheric pressure pushing on the outside of the balloon.
What quantity of iodine can be obtained if 20.0g of NaI is mixed with 10.0g of MnO2 and a stoichiometric excess of sulfuric acid
KRB pelle technique, solvents, mulls, thin film plate technique. which one of the following methods is better
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