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Question:
How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100 worth of gold?
The density of the ore is 8.0 g/cm3 and the price of gold is $818 per troy ounce. (14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)
A voltaic cell has a standard cell potential equal to 0.74 V. If the standard electrode (reduction) potential for the anode is - 0.22 V, what is the standard electrode potential for the cathode
How do you predict the solubility curve vs Temperature for adipic acid in water if im recrystallization from water? (Graph: x-axis is temperature and y-axis is solubility) How would the graph kinda look like
Draw molecular structure of the following compounds. Identify the : paraffins, olefins, alkynes, naphthenes,and aromatics.
how many moles of liquid unknown will be present in a 2 m solution? Also, assuming that the molar mass of the liquid unknown is about 50g/mol, calculate the approximate mass of liquid unknown that should be added to your water-ice mixture.
The percent by mass of bicarbonate (HCo3-) in a certain Alka-Seltzer product is 32.5%. Calculate the volume of CO2 generated in ml at 37 degree C and 1 atm when a person ingests a 3.29 g tablet.
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L^-1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L^-1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass..
As you can imagine, there will be many other elements and compounds present in the solution. How would you best determine the concentration of the analytes in the presence of the other elements and compounds
Does anyone know the balanced equation piperonaldehyde (C8H6O3)+ acetophenone (C8H8O)= 3,4-methylenedioxychalcone(C16H12O3)
Question- An LRC series circuit consists of an 85.0-? Resistor, a 14.0-F capacitor, a 1.50-mH inductor, and a variable frequency ac source of voltage amplitude 13.25 V. At what angular frequency will the inductive reactance be 4.00 times as large a..
How fast must a 143.5 baseball travel in order to have a de broglie wavelength that is equal to that of an xray photon with landa = 79.0 pm? what is the energy level?
Calculate the ph at the equivalence point for the titration of .250 methylamine and .250 HCL. The Kb of methylamine is 5.0X10^-4
when sodium azide , NaN3 , is activated in an automobile air bag , nitrogen gas and solid sodium are produced . if 0.0500 moles of NaN3 react , what mass , in grams , of nitrogen would result ?
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