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You perform combustion analysis on 255 mg of a molecule that contains only C, H, and O, and you find that 561 mg CO2 is produced, along with 306 mg H2O. All of the carbon in the CO2 comes from the hydrocarbon compound, and all of the hydrogen in the water comes from the hydrocarbon compound.a. If the molecule contains only C, H, and O, what is the empirical formula? (Hint: try using percent composition)
How many moles of NaOH must be added to 1.0 L of 1.2 M HC2H3O2 to produce a solution buffered at each pH? a) pH=3.87 b) pH=5.24
Which satisfy the octet rule and which do not? PS3, SO2, SO3, NO3-1, CO3-2, PCl5
If 1.87 g of acetic acid(CH3CO2H) reacts with 2.31g of isopentyl alcohol(C5H12O) to give 2.96 gm of isopentyl acetate(C7H14O2)
Next calculate molar internal energy and molar heat capacity assuming vibrational energy levels are not significantly populated at 298 K and do not contribute to molar heat capacity and molar internal energy. Calculate percent error for each molar..
Carbon tetrachloride may react with oxygen to produce chlorine and carbonyl chloride.2CCl4(g) + O2(g) 2COCl2(g) + 2Cl2(g); Kc = 9.9 × 1051What is Kc for the following equilibrium?COCl2(g) + Cl2(g) CCl4(g) + ½O2(g)
The heat of formation (?H°f) of MgCO3 (s) is -1095.8 kJ/mol. The chemical equation associated with this reaction is: MgO (s) + CO2 (g) ? MgCO3 (s) Mg+ (s) + CO3- (s) ? MgCO3 (s) Mg (s) + CO3 (s) ? MgCO3 (s) Mg (s) + C (s) + 3/2 O2 (g) ? MgCO3 (s) ..
A galvanic (voltaic) cell consists of an electrode composed of iron in a 1.0 M iron(II) ion solution and another electrode composed of copper in a 1.0 M copper(II) ion solution
Orange juice is an aqueous solution that derives much of it's acidity from citric acid. There are variations in the acidity of each brand depending on many factors
A solution containing 0.2 g/mL of a pure R enantiomer in a 1 dm polarimeter rotates plane polarized light by +3?. What is the specific rotation of the R isomer. What will be the specific rotation of its S isomer.
Calculate the molarity of a solution made by adding 44.4 mL of concentrated ammonia (28% by mass, density 0.880 g/mL) to some water to some water in a volumetric flask
The work-up procedure calls for washing the crude 2-chloro-2-methylbutane with cold sodium bicarbonate solution. a. What purpose does this wash serve?
Write reactions and equilibrium relationships for the first four complexes formed between cadium(II) and chloride
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