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A mixture of composition of 70.0% methane (CH4) and 30 % ethane (C2H6) by mass is burned up in oxygen to produce carbon dioxide and water. The reactions that occur are CH4 + 2 O2 = CO2 + 2 H2O and 2 C2H6 + 7 O2 = 4 CO2 + 6 H2O. How many grams of oxygen are needed to react completely with 50.0 grams of the hydrocarbon mixture?
Ethylene glycol is the primary ingredient in antifreeze, has the chemical formula C2H6O2. The radiator fluid used in most cars is a half & half mixture of water and antifreeze (by mass). If Kf=1.86 C/m and Kb=0.512 C/m,
How many moles of Barium nitrate must be added to 325mL of 0.20M Iron (III) nitrate to increase the concentration of nitrate ions in the solution to 1.25M.
the following reaction is carried out in a closed vessel.2 nog cl2g ---gt 2 noclgif the partial pressure of no is
If we wish to prepare a 0.50M solution of NaCl how much water must be added to 1.0 mole of NaCl?
A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.617 times that of the initial number of microstates?
acetylene gas c2h2 is produced by adding water to calcium carbide cac2cac2 2h2o gt c2h2 caoh2 .how many grams of
A .100g sample of a carbon, hydrogen, oxygen compound was burned in a stream oxygen and produced 0.220 g CO2 and .239 g H2O. what is the mass percent of hydrogen in the sample
If atoms of element Z have a mass of 0.815 , what is the identity of Z?
A gaseous compound containing hydrogen and carbon is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158mL of the gas, measured at 556 mm Hg and 25 degrees C is found to be .275 g. What is the molecular formu..
A sample of helium gas is at a temperature of 100 K. If both the volume and pressure each double what is the final kelvin
An isotonic solution is described as 0.92% NaCl (g/mL). Would this also be the required concentration for isotonic solutions of other salts, such as KCl, MgCl2,
if the cell had an excess of NADHPH but needed to make ribose-5-phosphate, which glycolytic(s) would be used? a. glucose-6-phosphate and fructose-6-phosphate
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