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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?
Both potassium chloride (KCL) and potassium hydroxide (KOH) are very soluble in water. However, as one increases the temperature of the solution, KCL becomes more soluble and KOH becomes less soluble. Explain
The following questions pertain to the magnitude of the x-component of the speed(absolute value of the velocity) cx=|vx| of atoms in a gas, whose probability distriubution has the form P(cx)= ae^-bc2/x. A. Write down the integral you would need to ..
a student prepared a stock solution by dissolving 10.0g of koh in water to make 150. ml of solution. she then took 15.0
What are the partial pressures of these substances in the vapor above a solution of 1.54 mol of CH2Cl2 and 1.38 mol of CCl4 at 23.5°C
Find the mass of sodium required to produce 5.68 L ofo hydrogen gas at STP from the reaction described by the following equation: 2Na+2H2O-->2NaOH+H2
Consider the following thermochemical equations : 8Mg(s) + Mg(NO3)2(s) ? Mg3N2(s) + 6MgO(s) ?H°rxn = -3884 kJ Mg3N2(s) ? 3Mg(s) + N2(g) ?H°rxn = +463 kJ 2MgO(s) ? 2Mg(s) + O2(g) ?H°rxn = +1203 kJ Use the above equations to calculate the ?H°f (in k..
How much heat is required to warm 221 g of ice from -46.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
a 155 gram sample of copper was heated to 150 degrees celsius then placed into 250 gram of water at 19.8 degrees
What mass of PbSO4 forms when 1.25L of 0.0500M Pb(NO3)2 and 2.00L of 0.0250M NaSO4 are mixed
If NF can interact with a transition-metal ion to form a chemical bond, what type(s) of ligand-metal interactions would be most important. Would you expect NF to be high or low in the spectrochemical series. Why
A 25.0 ml sample of 0.105 M HCl was titrated with 31.5 ml of NaOH. What is the concentration of the NaOH
following hybridization these 4 unpaired electrons can form covalent bonds. In order to promote an s electron to an empty p orbital, energy is required. Is it energetically favourable to promote this electron when bonding? Why or why not
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