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The air in a laboratory was measured with a barometer to be 7.40 x 102 mm Hg. What is the laboratory air pressure in atm?
60.0 mL portion of of 1.70 M solution is diluted to a volume of 288 mili litres. A 144-mili litres portion of that solution is diluted using 115 mLili litres of H2O. Determine the final concentration.
Uses of de-Broglie equation in electromagnetic specra - Find the mass of oxygen and decomposed potassium chlorate along with the pressure in the glass bulb.
what is the density of sample of ammonia gas if the pressure is 705mmHg and the temperature is 63.0 degrees C?
Determine What would be the density of the solid if density of toluene at the temperature of the experiment = 0.864 g/mL.?
Calculate the empirical and molecular formulas of a compound, C?H?Cr?, given the following: 1) The compund contains 73.94% C and 8.22% H. The rest is Cr. 2) At 25 degrees celius, the osmotic pressure of a solution containing 5.00 mg of the unknown..
For the following reaction, label the acid, base, conjugate acid, and conjugate base. Given the following values for Ka, circle the stronger acid and stronger base and predict whether the equilibrium is toward the reactants or products.
Calculate the volume of C2H2 that is collected over water at 23 Celcius by reaction of 0.751 g of CaC2 if the total pressure of the gas is 740 torr. (The vapor pressure of water is 21.07 torr .)
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
Assume that 0.406 mol Carbon (g) is placed in a cylinder that is expanding. The barometric pressure on the outside of the cylinder is constant at 1.00 atm and the temperature is 300.0 K.
a solution is prepared by dissolving 396 grams of sucrose in 624 grams of water. what is the vapor pressure of this solution at 30 degrees celsius.
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
What percentage of Phospine is decomposed after 1.25 min? c) How long will it take to decompose one fifth of the phosphine?
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