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Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 10.5 g of ethane is mixed with 76. g of oxygen. Calculate the minimum mass of ethane that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits. 2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
Calculate the concentration of a solution of FeCl3 was prepared by dissolving 13.86 gm of FeCl3 in 2.5L of water.
The temperature of a 35.2 g sample of iron increases from 23.7 C to 29.5 C. If the specific heat of iron is 0.450 J/g-K, how many joules of heat are absorbed.
If you open the valve on the tank and release the helium into a room with a volume of 10,000 liters, what will happen to the "space" between the helium atoms? Clearly explain
A solution of ethanol (C2H5OH) in water is prepared by dissolving 63.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 255.0 mL of solution. What is the molarity of the ethanol in this solution?
the permangenate ion and determine the standard reduction potential for the reaction.
A student measures 0.2452 g of a monoprotic solid acid, and dissolves the solid in water to make 100.0 mL of solution. The entire solution is titrated to a phenolphthalein endpoint with 45.09 mL of 0.1752 M KOH.
A compound composed of sulfur and fluorine is found to contain 25.24% by mass of sulfur. If the molar mass of the compound is 254.11 g/mol, what is its molecular formula?
When the following deuterium-labled isomer undergoes elimination, the reaction yields only trans-2-butene and cis-2-butene-2-d.
Pour the water into a 24.0 gram beaker and boil off all the water, so only the salt remains. The beaker with salt in it weighs 41.0 grams. What is the % of salt and % of water
In an electrolysis cell similar to the one employed in this experiment, a student observed that his unknown metal anode lost 0.238 g while a total volume of 84.90 mL of H2 was being produced
Why does absorbance vs concentration calibration curve need not pass through origin (0,0) looking at beer lambert law?
He finds that the total pressure at equilibrium is 40% greater than it was originally. What is Kc for this reaction?
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