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A female patient requires 2.70×10-2 grams of a sulfa drug then determines how many tablets should be given to her if there are five tablets in stock.
A rectangular block of plastic floats in the middle of the Pacific Ocean , measuring 1.79 cm by 1.73 cm by 2.29 cm,. The volume of sea water displaced by the plastic block = 4.80 cm3. Supposing the density of the sea water = 1.025 g/mL, determine the density of the plastic?
A student has invented a new temperature scale, the Zuban scale ,In common with the Celsius, Kelvin and Fahrenheit scales, it is a linear scale.
Determine the numbers of moles of iron that would be formed from 6.2 moles of CO (carbon monoxide) combining with excess of iron (III) oxide (Fe2O 3 )?
Compute the a)molarity of the solution, b)molality of the solution, c) mole fraction of Ammonia.
Determine the molarity of a solution of sodium hydroxide (NaOH) if 27.9 mL of this solution combines exactly with 22.30 mL of 0.253 M
Determine What would be the total volume in the graduated cylinder if density of Ag= 10.5 g/mL.?
Compute the enthalpy change for the dissolution of ammonium nitrate express your answers in units of kJ/mol.
Find the change in the fraction of visibility for a person from planet Krypton with x-ray vision in addition to visible spectrum.
All ammonium compounds, that comprise the ammonium ion (NH4+) and negative ion, are thermally unstable. Explain two ways that ammonium compounds decompose when they are heated.
It is given that the v.p. of water =233.7 mm Hg.at 70 degree Celsius then calculate the vapor pressure? express your answer in mm Hg ?
Calculate How many mL of the HCl solution was required for the titration.
Determine the half- life, in hours of iodine-123 If the amount of radioactive Iodine-123 in a sample decreases from 0.4 grams to 0.1 grams in 26.4 hours?
Using a sample of a compound containing only oxygen and chlorine reacts with an excess of H2 gas to give 0.206 g water and 0.278 g HCl
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