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Mining engineers often have to deal with gases when planning for the excavation of coal. Some of these gases, including methane, can be captured and used as fuel to support the mining operation. For a particular mine, 2.4 g of CH4 is present for every 100. g of coal that is extracted. If 45.6% of the methane can be captured and the daily pro-duction of the mine is 580 ,metric tons of coal, how many moles of methane could be obtained per day?
How many grams of F2 are needed to produce 157 g of PF3 if the reaction has a 79.8% yield?
what is steam distillation and why is it a preferred technique to purify high boiling liquids that are water insoluble?
Lead is below tin but above copper. Suppose that you wanted to remove lead ions from a solutiion to make it less poisonous. Would you ass a strip of tin or copper to the solution
addition of hbr to 1-phenylpropene yield only 1-bromopropylbenzene.propose a mechanism for the reaction and explain
a 2.2 g sample of an unknown acid with an empirical formula of c3h4o3 is dissolved in 1 l of water. it requires a 25 ml
Sulfuric acid is mixed with aqueous sodium hydroxide to produce water and sodium sulfate. Liquid C6H12 is burned in air.
The oldest uranium-containing rocks on Earth contain approximately equal numbers of uranium atoms and lead atoms. Assuming the rocks were pure uranium when they were formed, how old are the rocks?
Calculate what mass of solid potassium monohydrogen phosphate should be dissolved in this solution to yield the required buffer
NaOH solution to raise the PH of the waste stream to PH 10, determine the flow rate of NaOH solution in (Gal/min). Assume ideal solution conditions
A 50.0 gram piece of iron at 152 degrees celsius is dropped into a 20.0 grams of Water at 89 degrees Celsius in an open thermally insulated container. How much water would you expect to vaporize, assuming no water splashes out?
Mercury has a density of 13.6 g per mL. A barometer holding 9.50mL of mercury has broken. The cost of mercury disposal is based on mass. How many kilograms of mercury were in the barometer?
What is H in kJ for the process of freezing a 28.9 g sample of liquid silver at its normal melting point of 961 oC.
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