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Prepare 100 mL (total volume) of a buffer solution that is 0.025 M in carbonic acid, pH 7.25. You have solid H2CO3 and solid NaHCO3. Calculate how many grams of H2CO3 and HCO3- you need to weigh out to prepare this solution.
propane c3h8 is often used as a fuel for heating. it burns to produce carbon dioxide and water. write a balanced
If the salt bridge consists of a gel containing approximately 1 M KNO3, will the NO3-ions flow into the right hand (Cu, Cu2+) or left hand (Al, Al3+) half-cell when the circuit is completed
Explain If 1 M H2SO4 is used to titrate a 290.0 mL solution of 0.84 M ammonia (NH3), define what volume of acid is required to completely neutralize the base. Each mole of the strong diprotic acid produces two moles of hydronium ions in water.
calculate the amount of potassium ferricyanide(formula weight 329.23g/mole) that must be used to prepare 250 mL of a 2.5X10-3 M solution.
Cyclohexene also 2-hexyne both have the molecular formula C6H10. Explain how would you use infrared spectroscopy to distinguish between the two compounds
Problem- A solid aluminum sphere has a mass of 86g. Use the density of aluminum to find the radius of the sphere in inches.
Suppose you inserted a piece of an unknown metal into a solution of zinc (II) nitrate and observed no reaction. Then if you inserted the unknown piece of the metal into the solution of iron (III) chloride a deposit formed on the bottom of the well..
the presence of the radioactive gas radon rn in well water obtained from aquifers that lie in rock deposits presents a
can a liquid be identified by the same principl(e.g. mixing an unknown liquid with known liquid) and determining if the boiling point of the mixture is depessed if the two liquids are different?
When the elements below are burned, they emit light of a specific wavelength, listed below. Calculate the frequency for each and determine whether the light emitted is visible, UV, infrared, etc.
How can 400 ml of 2.00 M HNO3 be prepared from concentrated nitric acid, 16M HNO3. Balance the following eq in ACIDIC solution MnO2(s)+I-(aq)=Mn(2+)(aq)+I2(s)
For a certain first order reaction, it takes 32.6 minutes to consume 32.6% of the original concentration of reactant. how much of the original concentration will be consumed after 65.2 minutes
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