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During the late 1800's, hard rock miners replaced candles with carbide lamps for work in mine shafts. The lamps worked by dripping water onto calcium carbide that generated acetylene gas (H2C2) that was burned. If the reaction is CaC2 + 2H2O → H2C2 + Ca(OH)2, how many liters of acetylene gas at 1.00 atm pressure and 0.00 °C are produced from 75.0 grams of calcium carbide (CaC2)?
The smallest sample of carbon atoms that can be observed with the naked eye has a mass of approximately 2 x 10-8 g. Given that 1 g = 6.02 x 1023 amu,
The combustion of 135mg of a hydrocarbon produces 440mg of CO2 and 135mg of of H2O. The molar mass of the hydrocarbon is 270 g/mol. Determine the molecular formula of this compound ?
what mass of aspirin can be prepared by reacting 5.00 g if salicylic acid with an excess of acetic anhydride?
How many liters of oxygen are needed to exactly react with 19.8 g of methane at STP?
How much heat is released when 25mL of 0.10 M NaOH reacts with 50 mL of 0.10 M HCl?
Bonding in some solids does not fit neatly into one of the four categories. Explain why the bonding in Na2CO3 is not purely ionic.
What carbonyl compound would the following condensation product? Which of the following could result from a self-aldol condensation followed by dehydration?
A 15.0--mL unknown sample of aqueous acetic acid, CH3COOH(aq), was titrated using 0.800 M NaOH. If the titration endpoint was found to be 20.0 mL.
How many liters of H_2 would be formed at 704 mm Hg and 14 degrees C if 21.5 g of zinc was allowed to react?
Describe in brief the risk connected with solutions of 1M NH 3 , 1M HCl, and 1M NaOH?
The valve between these Tanks X and Y is opened and the gases are permissible to mix. After the gases have had time to mix, calculate the partial pressure of the oxygen gas?
A voltaic cell consists of an Au/Au3+ electrode (E° = 1.50 V) and a Cu/Cu2+ electrode (E° = 0.34 V). Calculate [Au3+] if [Cu2+] = 1.20 M and Ecell = 1.13 V at 25°C.
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