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A solution is prepared by dissolving 100.4g sucrose (C12H22O11) in 0.554 kg of water. The final volume of the solution is 570mL. Compute the percent by mass of sucrose in this solution.
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
Equal volumes of an unknown gas and nitrogen (N2) gas take 5.37 min and 3.55 minutes, respectvely to effuse through a small pin hole. calculate the molar mass in g/mol of the unknown gas
oxygen is burned completely, 3.86 grams of CO2 and 1.26 grams of H2O are produced. What is the empirical formula of the compound?
Sorbic acid, C5H7COOH, is a weak monoprotic acid with Ka = 1.7 x 10-5. Calculate the pH of a solution containing 11.25 g of potassium sorbate in 1.75 L of solution.
Derive a frequency response curve for a low-pass RC filter in which R= 2.5 kohms and C = 0.015 F. Cover a range of (Vp)0/(Vp)1 of 0.00I
Calculate the molarity of 500.0 cm3 of solution containing 18.5 g of calcium nitrate Ca(NO3)2
find the value of pressure.1. a gas in a sealed container has a pressure of 111 kpa at a temperature of 50.0degc. if
how many NH4Cl moles and how many NaOH moles would you need? About how many more moles of NaOH could you add before the buffer breaks down?
a postulated mechanism for the reaction2n2o5 g rarr4no2 g o2 g consists of the following three stepsn2o5 harrno2 no3
The shorthand notation for the galvanic cell reaction Fe3+(aq) + 2 I-(aq) ? Fe2+(aq) + I2(s) requires an inert electrode on A) only on the right side of the salt bridge
The nuclide 198 au 79 has a half life of 64.8 hours. what is the rate constant for the decay of 198 au 79. how much of a 0.0100g sample of 198 au 79 remians after 1 day.
A syringe containing 1.64mL of oxygen gas is cooled from 95.9°C to 0.8°C. What is the final volume of oxygen gas?
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