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Calculate [OH] for a solution formed by adding 5.00 mL of 0.140M KOH to 15.0 mL of 9.0×10-2M Ca(OH)2.
If 20.0 dm3 of methane, CH4, react with 200.0 dm3 of air at STP, calculate the dm3 of carbon dioxide gas produced.
If you have 330 ml of water at 25 degrees and add 110 ml of water at 95 degrees, What is the final temperature of the mixture.
Discuss how to find the molar mass of a compound, percent composition of the elements of a compound and how to determine the empirical and molecular formulas from percent composition.
Determine which species is present in the lowest concentration in 0.10 M H3A solution?
The distance between layers in a crystal is 281 pm. X rays are diffracted from these layers at an angle of 19.0°. Assuming that n = 1, calculate the wavelength of the X rays in nm.
Draw a diagram showing the stratification in a body of water. Label the different layers and describe the type of chemistry (and species) that occurs at each level.
A .117 gram sample of a metal reacts with hydrpchloric acid to produce 36.3mL od dry hydrogen gas. what is the equivalent weight of this metal.
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 x 10-5.
Compute the enthalpy change, , for this reaction per mole of (Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 and 1.00 ] )
Determine what mass of sulphuric acid would be needed to mix with 0.75 mol of sodium hydroxide(NaOH)?
when a metal was exposed to light at a frequency of 4.63*10^15 Hz, electrons were emitted with a kinetic energy of 3.10*10^-19 J.
Write a balanced nuclear equation for the alpha decay of each of the following radioactive isotopes.
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