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in an organic compound % of carbon is 75.2%,% of hydrogen is 10.75 and % of oxygen is 14.03..Find the empirical formula of compound?
How many moles of Al2S3 are produced using 12.8 grams of Al and 7.59 x 10-2 moles of S8
A piece of metal of mass 27 g at 105?C is placed in a calorimeter containing 49.2 g of water at 19?C. The ?nal temperature of the mixture is 30?C. What is the speci?c heat capacity of the metal.
What is the structure of the alkane? The reaction of lithium di-sec-butylcuprate with isopenyl bromide yields?
If 10.0mL of acetic acid, CH3COOH, is diluted with water to a total volume of 200.0mL, what is the percent by volume of acetic acid in the solution.
ow many grams and how many moles of octane must be burned to release 450 kcal?
Using a sample of 350. mL air is collected at 35 Celsius has a pressure of 550. torr. if it is allowed to expand to 425 mL at 57 Celsius then What pressure will the air exert?
Determine the empirical and molecular formulas of Ibuprofen has 75.69% C, 8.80%H and 15.51%O by mass and has a molar mass about 206g/mol.
If a car has an EPA mileage rating of 30 miles per gallon, What is this rating in km L-1? 1 liter = 1 dm3, 1 gallon = 3.785 liter, 1 mile = 1.609 km.
Determine how many grams of NaCl should be dissolved in a liter of H 2 O to produce an isotonic solution?
Chemical Kinetics - Show that only the reactants of the slow step of a reaction are found in the rate law of the reaction - which of the two steps is slower and which substance (if any) is probably an unstable intermediate?
Magnesum metal will burn in carbon dioxide gas to produce carbon and magnesium oxide. What mass of magnesium will react with a 250.0 ml container of carbon dioxide gas at 77.0 degrees celsius and 65.0 kPa.
If the average speed of an oxygen molecule is 4.05multiplied by 104 cm/s at 25°C, what is the average speed of a CO2 molecule at the same temperature?
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