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To the alchemists, gold was the material representation of purity. It is a very soft metal that can be hammered into extremely thin sheets. If a 1.54 g piece of gold is hammered into a sheet whose area is 34.4 ft2, what is the average thickness of the sheet? (The density of gold is 19.32 g cm-3.)
predict the organic product of the following reaction CH2=C(CH3)2+ H-0-H with H2SO4?
A 2.00 gram sample of unknown gas is placed into a 296 mL flask at 17°C and found to have a pressure of 717 torr. What is the pressure (in kPa) if the sample is moved into a 200 mL flask at 352K
what is the desity of Osmium if 50.6 gram occupy 2.23 ml. What is the volume of the same mass of Aluminum if the density if 2.70grams/cm3
Determine the mass in gms for pure Ag sample that loses 2.88kJ if its temperature drops from 143 degree celsius to 28 degree celsius.?
When separated from a water solution, CuSO4 forms a hydrate with 5 water molecules per formula unit. If 38 g of anhydrous CuSO4 are dissolved in water, what mass of the hydrate could be recovered from the solution?
Write the ionic equation for the reactions. Write the net ionic equations for the reactions, A.) LA2(CO3)3 (s)+HCL (aq)= LaCl3 (aq) + CO2 (g) + H20
Covert the EU Nitrate standard of 50ppm to its nitrogen content alone. Is the EU standard more or less stringent than the United States regulatory limit
The Cu-Ni system is an isomorphous one, meaning that the crystal structure does not change with alloying; in particular, Cu and Ni atoms randomly substitute for one another within a FCC crystal structure
A boiler is used to heat steam at a brewery to be used in various applications such as heating water to brew the beer and sanitizing the brewing tanks. 81.0% of the heat produced by the boiler is used to create saturated steam at 18.0 bars (absolu..
She records the final temperature of the water as 317K. What is the value of Ccal (calorimeter constant) for the calorimeter.
The vapor pressure of dichloromethane at 0C is 134mmHg. The normal boiling point of dichloromethane is 40C. Calculate its molar heat of vaporization.
In biological and medical applications, it is often necessary to study the autoionization of water at 37 degrees centigrade instead of 25 degrees centigrade. given that Kw for water is 2.5 X 10^-14 at 37 degrees centigrade, calculate the pH of pur..
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