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A box contains a mixture of small copper spheres and small lead spheres. The total volume of both metals is measured by the displacement of water to be 423 cubic centimeters and the total mass is 4.30kg.
What percentage of the spheres are copper?
A solution of HClO4 was standardized by dissolving .4125g of primary-standard-grade HgO in a solution of KBr. The liberated OH consumed 46.51mL of the acid. Calculate the molarity of the HClO4.
When aqueous solution of sodium sulfate and lead nitrate are mixed, lead sulfate precipitates. Calculate the mass of lead sulfate produced when 1.25 L
The X compound decolors in Bromine, bubbles in Na metal, changes from orange to green in Chromic Acid, and has no reaction with Lucas reagents.
In HPLC, how often should I need to run standard with samples? Why? If the retention time is changed with real samples compared to standard
A gas sample has an original volume of 580 ml when collected at 1.20 atm and 22°C. If a change is made in the gas pressure which causes the volume of the gas sample to become 1.45 liters at 40°C, what is the new pressure
Calculate a lattice energy for (in kilojoules per mole) using the following information.
Bones vary in mechanical properties. Where on the range of mechanical properties for bone do you think this bone would fall? Address at least elastic modulus, yield stress, and yield or ultimate strain.
What difference in titrant volume would you except between the end- point and the equivalence point if the only indicator available was diphenylamine sulfuric acid
Calculate the number of formula units of the compound and the number of each ion in 3.75 moles of AlCl3.
Calculate the mass of silver chloride in grams required to make 5.6 grams of silver plating?
A 5.00mL sample of sulfuric acid is titrated with 0.1198M aqueous sodium hydroxide. If 33.93mL of the basis required to reach the end point of the titration
The temperature of 55.6 grams of a material decreases by 14.8 degrees C when it loses 3080 J of heat. What is its specific heat?
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