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How many (a) kilometers, (b) Meters (c) centimeters, ad (d) millimeters are there in 0.800 miles calcuted to the correct numbers of significant figures? The conversion factor is 1 mile.
A 2.0 L tank at 298 K contains oxygen gas with a partial pressure of 3.8 atm and helium gas with a partial pressure of 5.2 atm.
A nonvolatile nonelectrolyte compound having a molar mass equals to 18000 g/mol is dissolved to give 100 mL aqueous solution that has an osmotic pressure equals to 26 mmHg at 27oC. The mass (in g) of this compound dissolved in this solution is: A)..
A 10.80-mL sample of sulfuric acid from an automobile battery requires 35.18-mL of 1.62 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? Sulfuric acid contains two acidic hydrogens.
They are used as foaming agents, propellants, and refrigeration fluids. Freons are controversial because of the damage they do to the ozone layer in the stratosphere. A 5.87 g sample of a particular freon in a 3.45 L bulb at 25.00°C has a pressure..
How many valence electrons are there for the POCl3 molecule? Draw a reasonable Lewis structure for POCl3. Assign formal charges for the atoms in your Lewis structure. Draw a second legitimate resonance contributor for POCl3. Assign formal charges ..
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.41.0 , what is the average thickness of the sheet in meters?
Determine the ionization energy (in kilojoules per mole) of a metallic element if light of wavelength 67.2 nm ejects electrons with a speed of 2165 km/sec.
Compare the percent ionization of the base in (a) with the percent ionization of the base in (b).
Write the chemical equation and the Kb expression for the reaction of each of the following bases with water: ammonia, NH3; hydrogen sulfide, HS- ; hypochlorite ion, ClO-
sample of sodium reacts completely with 0.142kg. of chlorine forming 234 g. of sodium chloride. what mass of sodium
what are the chemical properties of corundumaluminium
What is the lead (II) ion concentration in a solution prepared by mixing 381 mL of 0.437 M lead (II) nitrate with 433 mL of 0.362 M sodium fluoride? The Ksp of lead (II) fluoride is 3.6 × 10^-8.
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