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Calculate the concentration of sugar in % (w/v) for 250-mL solution that contains 4.32g og sugar
a photon has a wave lenght of 501 nm . calculate the energy of the photon in joules . enter your answer in scientific notation
Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25°C. Calculate the pH at 25°C for each of the following.
if a total of 702 mol of NaHCO3 and 2.4 mol of C6H8O7 react, how many moles of CO2 and Na3C6H5O7 will be produced?
The density of the waste is 85.3 Ibm/ft3. Calculate the weight of the pond contents in Ibf using a single dimensional equation for your calculation
Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. H+ + H2O2 ? H3O2+ (rapid equilibrium)
A 952 cm3 container of gas is exerting a pressure of 108 kPa while at a temperature of 48 oC. Calculate the pressure of this same amount of gas in a 1236 cm3 container at a temperature of 64 oC
Calculate the pH in the solution formed by adding 10.0 mL of 0.100 M HCl to 20.0 mL of 0.100 M NH3
two identical positive charges exert a repulsive force of 6.4x 10^-9 when seperated 3.2x10^- 10 m. calculate the charge of each
What is the value of Kf for acetic acid, given that its freezing temperature is 16.6 C and its density is 1.049 g/mL? Experiments show that a solution prepared by dissolving 5.00 grams of water
When you combine 2-ethoxybenzaldehyde and 4-heptanone what is the product and structure of that product. With 95% ethanol and 3M sodium hydroxide
Write the chemical equation for the formation of HBr from H and Br atoms. Lone pairs do not need to be included. Using the table of bond energies determine the ?H for the above reaction. (KJ/Mol)
What would be the equilibrium pH value of rainwater if atmospheric SO2 gas were its only dissolved constituent? Assume that the fugacity (activity) of SO2 gas in the atmosphere is 5 x 10-9 bar
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