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If you need 25,000 A of current to carry out electrolysis for 15 minutes, what voltage would you need if you are to use 1.7 kWh for the process?
If a single unit of Na weighs 3.82 x 10 -23 g, what is the mass in grams of a unit cell of Na?
- The decomposition of acetaldehyde CH3 CHO___CH4(g)+CO(g)
the molality of 0.05 M HCL(aq.) in 5L solution at 4 degree C is
1. A wastewater treatment plant receives 440 L/s of flow. This wastewater has solids concentration of 192 mg/L. How many pounds of solids enter the plant every day?
One gram of table salt is put into a 0.25 L glass, and the glass is filled with tap water. What is the concentration of salt in mg/mL?
If 2.00 moles of a gas occupies 12.0 L at STP, 5.00 moles of the gas will occupy how many L at STP?
What molal solution is made when adding 90 grams of K2SO4 to 0.55 kg of water?
Determine atmospheric pressure if the density of sulfur hexafluoride (SF6) is 5.32 g/L at 52oC.
Suppose you were attempting to synthesize 5.0g of lidocaine, using this reacción sequence (and the corresponding purification after each step). If each reaction produces the percent yield given, and each purification step produces only 90% recovery of the desired material, how many grams of each reagent do you need in order to end up with the desired mass?
Reaction 1 (72% yield):
C8H11N + C2H2OCl2 ----> C10H12NOCl + HCl
Reaction 2 (45% yield)
C10H12NOCl + C4H11N ----> C14H22N2O + HCl
#339914 on Dec 2023