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A 2.20g sample of an unknown acid (empirical formula =C3H4O3) is dissolved in 1.0 L of water. A titration required 25.0 mL of a 0.500 M NaOH to react completely with all the acid present. Assuming the unknown acid has one acidic proton per molecule, what is the molecular formula of the unknown acid?
From 5g of benzopinacol you obtained benzopinacolona 75% crude. The yield after recrystallization was 2 grams. benzapinacol molecular weight = 366.46 g / mol benzopinacolone molecular weight = 348.44 g / mol determine:
Determine the mass, of: a.30.0 mL of the liquid propylene glycol, a moisturizing agent for foods,
Write the short-hand and long-hand electron configuration for each of the following ions. For each ion, identify another ion that is isoelectronic with it. a. Mg2+ b. O2- c. Ga3+
this being in excess of the amount needed to neutralize both hydrogens of the H2C2O4. The excess NaOH required 12.62 mL of 0.1251M HClto reach the equivalence point. What was the weight % of H2C2O4 in the sample.
A solution of 75.0g of benzene and 75.0g of toluene has a total vapor pressure of 80.9mmHg at 303K . Another solution of 100.0g benzene and 50.0g toluene has a total vapor pressure of 93.9mmHg at this temperature.
The equilibiurm constant Kc for the reaction below is 4,2 at 1650 degrees Celcius. H2(g)+CO2(g)---->H2O(g)+CO(g). Initially 0.80 mol H2 and 0.08 mol CO2 are injected into a 5.0-L flask
Boron sulfide (B2S3) reacts violently with water to form dissolved boric acid, H3BO3, and hydrogen sulfide gas. What is the balanced Equation
A 26.79 g sample of a substance is initially at 23.6 C. After absorbing 1001 J of heat, the temperature of the substance is 198.1 C. What is the specific heat (c) of the substance?
The electronic absorption band of a compound in solution had a Gaussian lineshape and a half-width at half-height of 4233 cm-1 and εmax = 1.54 x 104 dm3 mol-1 cm-1. Estimate the integrated absorption coefficient.
Write the rate law for the clock reaction (equation 1) using variable for exponents.
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 9.70 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C
Write the overall equation for the reaction. B) Do you expect this reaction to go by an E1 or an E2 mechanism?
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