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How much of a 50% acid solution should be added to 40 gallons of a 25% acid solution to make a mixture that is 30% acid?
how many days does it take for 16g of palladium-103 to decay to 1.0g? the half life of palladium -103 is 17days
a solution is prepared by mixing 50.0 ml of 0.24 m pbno32 with 50.0 ml of 1.6 m kcl. calculate the concentrations of
What is the theoretical yield of hydrazine, in grams, prepared from the reaction of 150.0mL of 1.01 M NH3 (aq) with 50.0 mL of 1.25 M NaOCl (aq)?
An aqueous vinegar sample contains 5.4% acetic acid by mass and has a density of 1.006 g/mL. Calculate the amount of acetic acid in grams in 2.00 L of this vinegar. Report your answer using the correct number of signi?cant ?gures.
What is the activation energy for a reaction if its rate constant is found to triple when the temperature is raised from 300 k to 310 k.
In 2C4H10+13O2->8CO2+10H20 how many moles of O2 are required to react completely with 4.4 Moles of C4H20?
When 1.00 L of water from the surface of the Dead Sea is evaporated, 179 g of MgCl2 is recovered. What is the molarity of MgCl2 in the original sample
Calculate the heat released when 206 g of ice cooled from 0 degrees C to -10 degrees C. (The specific heat of ice is 2.09 J/g. C)
You will encounter a simiar mixture in this experiment. The solubility product constants for ZnS and CuS are 1.1x10^-21 and 6x10^-36, respectively. A.) Show that both ZnS and CuS will precipitate at pH8. B.) Show that only CuS will precipitate whe..
Copper crystallizes in a face-centered cubic lattice. If the edge of the unit cell is 351pm, what is the radius of the copper atom
When an ice cube is dropped into a Styrofoam cup containing 195 g of coffee at 97.0 oC, the thermal energy used to melt the ice is 2.1 kJ what is the final temperature of the coffee closest to ? (Assume a specific heat of 4.184 J/g oC for the coff..
The reaction OH(aq) + HCN(aq) H2O(l) + CN(aq) is first-order in both the OH and HCN concentrations. The rate constant at 25oC is 3.7×10^9 mol^-1 L s^-1. In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of..
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