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The purity of gold alloys is expressed in karats, which is the mass fraction of gold multiplied by 24. Pure gold is 24 kt, whereas 18 kt gold jewelry typically contains 75% gold, 12.5% silver and 12.5% copper (by mass). Estimate the density of this 18 kt gold alloy.
When 0.069 mol of aluminum sulfate are dissolved in enough water to make 485 milliliters of solution, what is the molar concentration of aluminum ions?
How many milliliters of 0.100 M NaOH solution are required to neutralize a solution containing 3.92 g H2SO4
one mole c12h22o11 is added to 0.150 kg of water and the water is heated to 100C. what is the vapor pressure of the solution at this temperature?
N2 is .070 moles, O2 is 0.35 moles and CO2 is 0.20 moles, the total is pressure 1.55 atm what is the pressure of N2?
Examination of the product mixture revealed that only about half of the starting material had been consumed and practically no PhCOCHBrCH3 was present. Explain these observations and draw the product that did form in the reaction.
After a solution of RuCl3 . 5H2O has stood for about ayear, addition of AgNO3 (aq) precipitates 3 mol of AgCl per mole ofcomplex. What has happened in the ensuing time
what is the expected boiling point of a brine solution containing 30.00g of KBr dissolved in 100.0g of water?
Diamonds are measured in carats, where 1 carat=0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
A sample of gas composed of 5.7 grams of carbon dioxide and 3.6 grams of neon in a container with volume 5.7L and temp 67 degrees Celsius. what is the pressure of the gas mixture
consider the constitutional isomers 2-methyl-1-butene 2-methyl-2-butene and 3-methyl-1-butene. when each of these
Every measurement has a measurement uncertainty. Discuss how precise and accurate measurement can be achieved in spite of the inherent measurement uncertainty. You could use either of the two options given below.
The basic Salt sodium acetate, CH3COONa, is completely soluble in water. What is the pOH of a 0.25 M solution of sodium acetate?
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