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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 1.07 g piece of gold is hammered into a sheet whose area is 30.0 ft2, what is the average thickness of the sheet? (The density of gold is 19.32 g cm-3.)
Compute the mass of Au(gold) that occupies 5.0 X 10^-3 cm^3. If the density of gold (Au) is given=19.3 g/cm^3.
Determine the amount of hydrochloric gas that should be bubbled into the buffer to triple hydronium ion concentration is closest to what?
A chemical reaction is run in which 463 Joules of work is done by the system and the internal energy changes by -1027 Joules. Calculate the amount of heat transferred.
what is the appropiate mechanism for the radical polymerization of 1-butyne? show the polymerization of three units of 1-butyne.
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) In a certain experiment, 4.30 g of NH3 reacts with 7.48 g of O2. Which is the limiting reactant?
Calculate Delta H for the process. Given u ={(2a/RT) - b}/Cp,m; with Cp,m = 38.4j/K.mol; a=3.60dm6 atm and b= 0.44 dm3.mol.
Calculate the number of grams of H2 formed If the wet Hydrogen gas formed occupies a volume of 9.67 Litres
If the pressure exerted by a gas at 25°C in a volume of 0.032 L is 2.79 atm, how many moles of gas are present?
a graduated cylinder reads 4 ml of water.then a shell is dropped into it and the water level rises to 12 ml.what is the volume of the shell?
For the reaction CO+O2 -> CO2 , what is the maximum amount of CO2 (44.0095 g/mol) which could be formed from 16.73 g of CO (28.0101 g/mol) and 0.251 mol of O2 (31.9988 g/mol)? Answer in units of mol
Calculate the energy change for the reaction K(g) + I(g) → K+(g) + I- (g) given the following ionization energy (IE) and electron affinity (EA) values. IE K = 419 kJ/mol, IE I = 1010 kJ/mol; EA K = 48 kJ/mol. EA I= 295 kJ/mol
Consider the molecule cyclohexane, which contains only hydrogen and carbon atoms. When a sample is burned in oxygen, 4.822 g of CO(2) and 1.650g of H(2)O are obtained. What is its simplest formula?
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