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How do you find the atomic mass of an element? How do you find the atomic number of an element?
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting
Define why the atomic mass of copper is not exactly equal to 64, midway between the mass numbers of copper-63 and copper-65.
Problem- What is the pH of 40.0mL of a solution that is 0.19 M in CN^- and 0.27 M in HCN? For HCN, use K_a=4.9*10^-9.
A solutions of hydrochloric acid was formed by dissolving 1.52g of hydrogen chloride gas in enough water ti make 24.1 mL of solution. what is the concentration in percent (m/v) of solution
The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common
an empty beaker weighs 41.19 g. when it is completely filled with water density 1.0 gml the beaker weighs 92.92 g.ahow
If the atom is assumed to be a sphere, what is the volume in cm3 of a single Au atom?
A 25.00-mL sample of well water containing dissolved iron was treated with hydroxylamine hydrochloride, pH 5 buffer, and 1,10-phenanthroline, and diluted to 100.0 mL. Absorbances were measured at 510 nm using a 1.00-cm cell.
There are several different types of organic molecules that were to have formed in early earth. Pick one molecule and describe how scientists theorize it formed
Calculate the pOH of a solution that contains 3.9 x 10^-4 M H3O at 25 degrees celsius.
mixing solutions of k2so4aq and bacl2aq produces an insoluble salt. which is the correct list of the ions which will
what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
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