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A sample natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 1.20L of the mixture? Assume ideal gas behavior.
What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 x 10-12 and respectively.
if 60 ml of a 1.6 m nacl solution is evaporated to dryness how many grams of salt will remain? a solution is prepared
Transition metals can combine with carbon monoxide to form compounds such as Fe(CO)5 and Co2(CO)8. If you combine 0.150 g Ni with CO and isolate 0.437 g Ni(CO)x
When you react ammonia with a halogenated alkane, will you get only one organic product?
As a technician in a large pharmaceutical research firm, you need to produce 100 mL of 1.00 M potassium phosphate solution of pH = 7.00. The pKa of H2PO4 is 7.21. You have 2.00 L of 1.00 M~ KH2PO4 solution and 1.50 L of 1.00 M~ K2HPO4 solution
What is the molecular weigh of acetic acid that will form 2 moles of CO2 assuming complete combustion.
The average person generates about 2500 Kcal of heat a day. How many kilowatt-hours of energy is this? If walking briskly dissipates energy at 500 W, what fraction of the day's energy does walking one hour represent.
tinii fluoride is often added to toothpaste as an ingredient to prevent tooth decay. what mass of fluoride in grams is
Suppose 41.19 g of sulfuric acid is mixed with 10.75 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction.
at a distance d from a charge the magnitude of the electric field is e. what would be the magnitude of the electric
When a solution of a certain gadolinium salt ie electrolyzed with current of 1.0 A for 2.0 h, 0.025 mol of Gd metal forms. Calculate the charge on the gadolinium ion in the salt
Use the Rydberg equation to predict the wavelength of the electromagnetic radiation emitted for following electron transitions for the hydrogen atom (rounded-off to the nearest 0.1nm).
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