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Caffeine with a mass of .265 g was used to prepare caffeine salicylate derivative. How do you find the theoretical yield of caffeine salicyIate
My balanced equation C8H10N4O2 + C7H6O3------> C15H16N4O5
light of wavelength 221nm striking a sample of tungsten causes electrons to be ejected with a speed of 6.04x10^5 m/s. calculate the work function of tungsten
How much heat energy, in kilojoules, is required to convert 74.0 g of ice at -18.0 C to water at 25.0 C ?
calculate the number of excess reagent units remaining when 84 C2H4 molecules and 270 O2 molecules react?
How many grams of sodium phosphate Na3PO4(163.9 g/mol) are contained in 205. mL of a sodium phosphate solution that is 0.194 M in sodium ion Na+?
If 20.0 dm3 of methane, CH4, react with 200.0 dm3 of air at STP, calculate the dm3 of carbon dioxide gas produced.
A bicycle tire is filled with air to a pressure of 720 torr at a temperature of 19 degrees Celsius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees Celsius.
Find out the concentration of this solution in a)M (molarity), b) m (molality), c) % w/w (percent by mass). If solvent =, H 2 O.
Write the decayreaction for this isotope and explain your prediction in terms of N/Zratio.
Find molarity, molality, percentage composition, boiling and freezing point of a solution - What are the boiling and freezing points of the solution?
Distinguishing the given compounds by Infrared spectroscopy, Cyclohexene and 2-hexyne both have the molecular formula C6H10
The Milikan experiment is important because it determined the of an . Using Thomson's and Milikan's the of an was determined. Rutherford's experiment is important because it clearly demonstrated that the is mostly
If a balloon containing 1,200 L of gas at 25C and 760 mm Hg pressure ascends to an altitude where the pressure is 380 mm Hg and the temperature is 54C, the volume will be.
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