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For each of the following reactions, calculate the moles of indicated product produced when 3.00 mol of each reactant is used: a) 4Li(s)+O2(g)-->2Li2O(s) (Li2O). b) Fe2O3(s)+3H2(g)-->2Fe(s)+3H2O(l) (Fe). c)Al2S3(s)+6H2O(l)-->2Al(OH)3(aq)+3H2S(g) (H2S).
Blood contains several substances that minimize changes in its acidity by reacting with either an acid or a base. One of these is the hydrogen phosphate ion, HPO42-.
Calculate the heat evolved per mole on combustion of each substance to yield {rm CO_2}(g) and {rm H_2O}(g).
How many total moles of ions are released when the following sample dissolves completely in water?
You have a 10.40 g mixture of table sugar (C12H22O11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be -2.24°C. Calculate the percent by mass of sugar in the mixture.
What would be an appropriate reaction mechanism for these two reactions? Including electron transfer arrows.
Calculate the average speed of an oxygen gas molecule, O2, at 21.0 degrees Celsius. Express your answer numerically in meters per second.
the osmotic pressure of this solution was 0.00222 atm at 25 C. calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte.
Calculate the energy per mL if the energy per gram for Methanol (MW = 32g) is 0.83 kcal/gram and for Ethane MW
How many grams of CH4 must be burned to release 554 kJ of heat based on this thermochemical equation:
Carbon NMR has only the following peaks: 29.8, 36.1 and 206.8 ppm. Propose a structure of this compound and explain splitting pattern and the ratio
Converting liquid water to solid ice releases 1.44 kcal/mol. How many kilocalories are released by freezing 2.5 mol of H2O? How many kilocalories are released by freezing 32 g of H2O.
A chemist wants to make 4.5L of a 0.340M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use?
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