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What speed would an O2 molecule have if it had the same momentum as a photon of 700 nm wavelength?
Write a balanced equations for the formation of the following compounds from their elements
A buffer contains significant amounts of acetic acid and sodium acetate. Write an equation showing how this buffer neutralizes added acid and added bases
A solution is prepared by dissolving 13.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.00 mL sample of this stock solution is added to 57.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
In order to maximize topographic contrast in SEM, would you use backscattered or secondary electron detector? Explain.
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution. Its pH was measured as 4.50 on a meter.
Predict whether a reaction will occur in each of the following. if so write the balanced chemical equation as well as the net ionic equation. Phases are all required for all species.
Determine the molar concentration of the original hydrofluoric acid solution, and find the pH of the original hydrofluoric acid solution.
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 7.90 to 6.16? Use E notation and 3 significant figures.
Why is lip gloss long lasting containing petroleum? How many metric tonnes of 5%-S coal would be required to yield the H2SO4 needed to produce a 2.0-cm rainfall of pH 2.00 over an area of 100 square kilometers?
Write balanced net ionic equation for the reactions that take place when the following reagents are mixed together in aqueous solution:
if the ethyl alcohol at 35 degree rise through 8.36 cm in a capillary tube of radius 0.20 mm , What is surface tension
Calculate the enthalpy and entropy departure for water at 400 C and 30 MPa using generalized correlations. Compare these values to those in the steam tables
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