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Combustion analysis of naphthalene, a hydrocarbon used in mothballs, produced 8.80 g CO2 and 1.44 g H2O. Calculate the empirical formula for naphthalene?
A 4.22g sample of CuS was added to excess HCl, and the resulting H2S was collected over water. What volume of H2S was collected at 32 degrees celsius
How many grams of water are needed to react with 75.0 g CaCN2?
How many moles of chloroform, CHCl3, are required to fill a 253-mL flask at 100.0°C and 940 torr?
When 20 mL of a 315 mL stock solution containing 2.2 M AlCl3 is diluted to 81 mL, what is the concentration of Al3+ in the new solution.
Require to apply to neutralize the acidity that concluded from nitrification and determine how much CaCO 3
a 2.00 kg sample of pure water at 20.0 degree celsius absorbs 3.53 kJ of heat. What is the final temperature of the water?
If the density of ethyl alcohol is 0.789 g/ml, how many quarts can be produced by the fermentation of 100.0 lbof sugar?
What is the maximum number of electrons that can be identified with each of the following sets of quantum numbers? In some cases, the answer may be "none."
If the density of N2 gas in a rigid flask is 0.243 g/L at 18 °C, what is the pressure of nitrogen in the flask if it is heated to 36 °C
Dehydrohalogenation Prepare styrene (C6H5CH=CH2) by dehydrohalogenation of either 1-bromo-2-phenylethane or 1-bromo-1phenylethane using KOH in ethanol.
How much energy in kilojoules is required to convert 260 mL of water at its boiling point from liquid to vapor.
Determine the ion notation for an atom with 18 electrons and 20 protons
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