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Assume that while titration of vinegar sample with standard NaOH takes place you misread the buret and the observed that the intended volume of sodium hydroxide is greater than the actual volume consumed. Determine how will this error control the final computed percentage of CH3COOH in the vinegar
hydrocarbon produced 24.8 g of CO2 and 8.44 g of H2O. What is the empirical formula for the hydrocarbon?
Solution A contains 29.541 millimoles of 0.09847 M of acetic acid (HOAc) and 34.51 millimoles of 1.0 M of sodium acetate (NaOAc). Solution B is made by 10 mL of Solution A + 90 mL of boiled water.
A 500ml Buffer solutin is 0.150 M in HNO2 and 0.175 M in KNO2. The Ka for HNO2 is 4.6*10^-4. What is the inital pH of this buffer. What is the pH of the buffer in the question above if 0.0049 moles of HCl are added assuming no change in volume
how many grams of carbon dioxide (CO2) gas at are contained in a volume of 344 liters at STP?
15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.496 M HNO2 (Ka for HNO2 = 4.0 × 10-4). What is the equilibrium concentration of NO2- ions?
High-purity benzoic acid (C6H5COOH; change H (rxn) for combustion = -3227 kj/mol) is used as a standard for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter
Why is lactose much more soluble in water than in ethanol?
Calculate the amount of energy present in the following photons and find the region of electromagnetic spectrum for each.
A man has 50 kg of lipids and eats 1 kg of fish a day, which contains 0.5 ppm of methylmercury. What concentration of methylmercury will his lipids achieve?
Draw a representation of the 3-D structure of the anion, including only the bonding-pair electrons, and any sulfur lone-pair electrons. What is the orientation of the oxygen atoms with respect to each other around the S-S bond?
How many liters of ammonia gas can be formed from the reaction of 150 L of hydrogen gas? Assume that there is complete reaction of hydrogen gas with nitrogen gas and that all measurements are made at the same temperature and pressure.
Lead ions can be removed from solution by precipitation with sulfate ions. Suppose that a solution contains lead(II) nitrate. Write complete ionic equation to show the reaction of aqueous lead(II) nitrate with aqueous potassium sulfate to form sol..
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