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Hydrogen gas can be produced in the labratory through the reaction of magnesium metal with hydrolic acid: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) +H2 (g). What is the volume, in liters, of H2 gas produced at 26C and 770mmHg from the reaction of 13.0g of Mg?
How much energy in joules is lost or gained when one mole of 90Y with a mass of 89.907152 amu undergoes beta decay to produce 90Zr with a mass of 89.904703 amu
Hydrogen and oxygen react under a specific set of conditions to produce water according to the following equation. 2 H2(g) + O2(g) -> 2 H2O(g)
why is a stemless funnel recommended for filtration of the hot saturated solution? 2. in your buchner funnel, can you use filter paper that is to big for the funnel and curls up around the edges? why?
An aqueous solution contains a mixture of Cl- and I-. A buret is used to slowly add a solution of Ag+. Will AgCl or AgBr precipitate first
Some of the original solid remained and total pressure in container was 7.76 atms when equilibrium is reached. Calculate number of moles of H2O(g) present at equilibrium How many grams of original solid remain
256 grams of sodium chloride reacts with an excess of calcium oxide. How many grams of sodium oxide are produced?
Equal numbers of moles of toluene and benzene are mixed and form an ideal solution. Compute the mole fraction of benzene in the vapor in equilibrium swith this solution.
Calculate the enthalpy change for the neutralization reaction. Calculate the experimental error compared to the accepted your value in question 2.
what type of intermolecular forces are between ch3ch2ch2cl and
estimate the minimum uncertainty in the position of an electron of mass 9.109*10^-31 kg if the error in its speed is 3*10^5 m/s
The crystal lattice structure of LaF3 is different from those discussed. Assume it is unknown. Using the equation of Kapustinskii, estimate the lattice energy.
The density of niobium is 8.58g/cm3. It's atomic mass is 92.91 g/mol and its structure is bcc. (a) Calculate the lattice parameter and the atomic radius from this information. (b) What is the planar density of atoms in the (110) plane (and sketch ..
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