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If 10.7 mL of .110 M NaOH is required to reach the equivalence point of a solution of citric acid, how many mL of NaOH are required to completely neutralized this solution?
patient if the recommended dose is 6.50 mg of aspirin per Kg of body weight? How many molecules does the patient ingest?
Name the anion obtained by removing one oxygen atom from the perbromate ion, BrO4 -
the atomic radius of a helium atom is 31 pm. what is the diameter of one helium atom in centimeters?
1) If air oxidation of 92.0% iron to ferric oxide is 87.0% efficient, what mass of this iron is required to make 3.00 moles of ferric oxide?
If 14.70ml EDTA is required to titrate the 50ml sample, what is hardness of ground water, and molarity in ppm of CaCO3 by mass?
1.0 mol of CaCN2 and 1.0 mole of water are mixed together: CaCN2 + 3H2O → CaCO3 + 2NH3 How much NH3 could be produced?
Calculate how many grams of phosphorus are present in 2.68 moles of phosphorus pentachloride(PCl5) and also determine the numbers of moles of chlorine are present in 3.71 grams of phosphorus pentachloride?
A process stream contains mostly light species 1 and heavy species 2 . A relatively pure liquid stream containing mostly 2 is desired, obtained by a single-stage liquid/vapor separation
An unknown compound has the empirical formula CH2. A 0.050-mol sample of this compound weighs 4.20 g. What is the molecular formula of this compound?
Silver chloride, often used in silver plating, contains 75.27% .Calculate the mass of silver chloride in grams required to make 4.4 of silver plating.
An aerosol spray can with a volume of 350 mL contains 3.2 g of propane gas (C3H8) as propellant. What is the pressure (in atmospheres) of gas in the can at 65oC?
Identify all of the substances that are used or produced in this experiment A5. Distinguish between elements and compounds.
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