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Magnesium oxide (MgO) forms when the metal burns in air.
(a) If 1.25 g of MgO contains 0.754 g of Mg, what is the mass ratio of magnesium to oxide?
(b) How many grams of Mg are in 435 g of MgO?
N2O4 + 2 N2H4 = 3 N2 + 4 H2O Determine the Limiting Reactant and the mass in Grams of Nitrogen that can be formed from 50.0g N2O4 and 45.0g N2H4. The molar masses are: N2O4=92.02G/mol and N2H4=32.05G/mol.
What mass of Al (26.89 amu) is consumed when 800. kJ of heat are released by the following reaction? 2Al(s) + Fe2O3(s) -> 2Fe(s) + Al2O3(s) deltaH = -850. kJ
Consider the following pair of nucleophiles in CH3OH. Which, a: F- or b: N3- is the better nucleophile. Consider the following pair of nucleophiles in CH3OH. Which, a: CH3S- or b: H2O is the better nucleophile
What are the importance of amino acids in physiological processes, in nutrition and in the different uses of these
If one reacts a double bond with bromine in chloroform a dibromide is obtained. However, if one reacts bromine in water with a double bond, a vicinal halohydrin is formed. Provide an explanation for this result and show a mechanism for the reactio..
Twenty-five milliliters of liquid nitrogen (density = 0.807g/mL ) is poured into a cylindrical container with a radius of 11.9cm and a length of 17.2cm . The container initially contains only air at a pressure of 760.0mmHG (atmospheric pressure) a..
find the molarity when 7.85 moles aluminum chloride are dissolved in enough water to make a total of 600. mL
The pyrene excimer emission spectrum at a (higher/lower/same) wavelength than (as) the excited pyrene fluorescence emission spectrum. Explain.
C5H12, 10.0 g hexane, C6H14 and 10.0 g benzene, C6H6. What is the mole fraction of hexane?
Draw a graph that shows the relative energy of the conformer as a function of the torsional angle. Make sure that you clearly label which conformer corresponds to which position on the graph.
Write the molecular formula for the compound that exhibits a molecular ion at M+ = 96.0580. Assume that C, H, N, and O might be present, and use the exact masses from your text.
How many liters of H2 at 23.0C and 733mm Hg are released when 1.98g of Na reacts with unlimited water?
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