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A sprinter set a high school record in track and field, running 200.0 m in 21.4 s. What is the average speed of the sprinter in kilometers per hour?
What is the freezing point of a solution prepared by dissolving 39g of benzene (C6H6) in 500g of cyclohexane. Fp for cyclohexane is 6.6 C Kf=20.0 C/m.
Use the following data, as appropriate to estimate the molarity ofa saturated aqueous solution of Sr(IO3)2.
1.5 mol of oxygen are mixed with an unknown amount of nitrogen in a 2.0L container at a temperature of 26.0 degrees C. If the final pressure of the mixture is 4.3atm, what is the number of moles of nitrogen in the container.
Hydrogen Sulfide gas has toxicity comparable to Hydrogen Cyanide, but because of its intense odor its presence is observed at concentrations well below toxic levels.
a piece of metal with a mass of 151 g is placed in a 50 ml graduated cylinder. the water level rises from 20. ml to 35
Phosphorus trichloride and phosphorus pentachloride equilibrate in the presence of chlorine: PCl3 (g) + Cl2 (g) ? PCl5 (g). At equilibrium, the pressures of the individual species are as follows: 0.202 atm for PCl3 (g), 3.45 atm for PCl5 (g) and 0..
Flask a contains h2 at 0 C and 1 atm pressure. Flask b contains co2 gas at 25 C and 2 atm pressure. compare these following
A soft drink contains an unknown amount of citric acid, C3H5O(COOH)3. 10.0ml of the soft drink requires 6.42 ml of 9.580 x 10^-2 M NaOH to reach the equivalance point in the following reaction.
calculate the number of moles of gaseous n2 contained in a sample of 300 ml of gas saturated with water vapour at 25
If 0.100g of a known inorganic complex [Ni(H2O)4(NH3)2]Cl2 is dissolved in 1000mL of water how many mL of 0.025 M AgNO3 would be required to titrate the liberated chloride
By how much does the chemical potential of carbon dioxide at 310K an 2.0 bar differ from its standard value at that temperature
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 9,494kJ of heat is needed from the combustion
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