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A patient is given a 58.0-mg dose of Iodine-131 to image the thyroid. This nuclide has half life = 8.0 days. What mass of the nuclide remains in the patient after 33.0 hours, when the thyroid scan is taken?
A rolaids tablet contains calcium carbonate, which neutralizes stomach acid. If a rolaids tablet neutralizes 42.15 mL of 0.320 M hydrochloric acid, how many milligrams of calcium carbonate are in a rolaids tablet. CaCO3(s) + 2HCI(aq) -(arrow right)..
Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.
A 2.50-g sample of a large biomolecule was dissolved in 37.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
With a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second soution.
the oxidation of nitric oxide to nitrogen dioxide is2nog o2g -gt 2no2gif 100.0 ml of no at stp reacts with 400.0 ml of
mass mol atoms moles mol mass moles atoms g mol atoms moles how many atoms are in 1 g of what is the mass of 1 the
calculate the equilibrium concentrations of h2o co2 and h2 in a reaction mixture obtained by heating 6.00 of steam and
determined its current level of YAN to be 120 ppm N. If each gram of DAP adds 0.21 gram of N to the must, how much DAP is needed?
A solution of NaOH(aq) contains 8.7 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
Calculate the pH at the equivalence point in the titration of 54 mL of 0.10 M methylamine with a 0.20 M HCl solution. Ka = 4.4 X 10^-4
Calculate the density of a sphere that has a circumference of 2.00 inches and weighs 100.0 gms. (c = 2pi r) (V = 4/3pi r^3)
Calculate the mass of ascobic acid in the whole tablet( use mass of whole tablet) c) Calculate the %error in the mass of ascobic acid in one whole tablet
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