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Determine the molar mass of carbon dioxide by measuring the mass of an Erlenmeyer flask full of the gas. The following calculations are intended to familiarize you with the general procedure:
The mass of an empty Erlenmeyer flask and stopper was determined to be 59.65 grams. When filled with distilled water, the mass was 299.4 grams. The atmospheric pressure was measured to be 0.9556 atm, the room temperature was 20.00oC. At this temperature, the vapor pressure of water is17.50 torr -- but assume a 50% relative humidity as outlined in the procedure for this experiment.
A 6.269 g sample of NiCl2·2H2O is heated until all the water of hydration is removed. What will be the mass of the remaining NiCl2?
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 268 {rm torr}. Pure pentane and hexane have vapor pressures of 425 {rm torr} and 151 {rm torr}, respectively, at room temperature. What i..
The pKa of protonated diethylamine is 10.94. What are the major forms present in a dilute soultion that is equimolar in acetic acid and diethylamine
the half life increased from 2.0 min to 4.0 min at 25C. Calculate the the order of the reaction and the rate constant.
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq) + H2 (g) When 5.00 g of a mixture of powdered magnesium and zinc were dissolved in diluted sulfuri..
What is the total number of moles of electrons transferred in this reaction: 2 C7H16O + 21 O2 = 16 H2O + 14 CO2? What is the oxidation and reduction pathway?
Draw sodium formate by placing atoms on the grid and connecting them with bonds. Include all lone-pair electrons.
A 25.688 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia.
What product(s) are expected in the ethoxide-promoted β-elimination reaction of 2-bromo-2,3-dimethylbutane? Omit ions, salts
Using a sample of CO 2 occupies a 2.54dm^3 container at STP. Determine the volume of the gas at a pressure of a temperature of 26.0 degree Celsius and 150.0 kPa?
The standard free energy of formation of gaseous hydrogen iodide is 1.30 kJ/mol at 25°C. Find Kp for the reaction 2HI(g) -> H2(g) + I2(s) at this temperature.
Calculate the formal concentrartion of a sodium acetate solution prepared by diluting 45.0 mL of a solution containing 25.0 ppm sodium acetate
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