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At a certain temperature, the root mean square speed of CH4 molecules is 1610 km/h. what is the root mean square speed of CO2 molecules at the same temperature ?
A 15.0-g sample of a hydrocarbon is placed in a balloon at 1.00 atm and 25°C, and the volume of the balloon is 12.2 L. The hydrocarbon is 79.89% carbon and 20.11% hydrogen by mass.
Determine the final concentration if a 144-mL portion of that solution is diluted using water of 143 mL ?
A 5.50 g sample of an unknown is dissolved in 251. g of benzene. The freezing point of the solution is 1.02 C below the normal freezing point of pure benzene.
Determine how many micrograms of herbicide are present in 10 lb of soil if the herbicide level in the soil in a corn field was observed at 3.0 ppb. ?
Explain how does unique physical and chemical properties of water contribute to significance of water for life on Earth to survive.
Using a sample of 0.0355 gram of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0°C. Calculate the molar mass of the unknown compound if the camphor freezes at 157.7°C upon cooling.
Calculating the equilibrium constant (Keq) for the given reactions - Determine the Keq for the following reactions
Write an equation for the sequential hydroboration and H2O2/OH ¯ oxidation of 4-ethyl-3- heptene. Indicate the main monosubstitution products in each of the following reactions.
A buffer is made using 45.0 mL of 0.750 M HC3H5O2 and 55.0 mL of 0.700 M NaC3H5O2.What volume of 0.10 M NaOH must be added to change the pH of the original buffer solution by 2.5%? Ka for this acid is 1.3 x 10
When 20 mL of a 120 mL stock solution containing 2 M BaF2 is diluted to 80 mL, what is the concentration of F- in the new solution.
If this energy were used to vaporize water at 100.0 degrees, how much water (in liters) could be vaporized.
Calcium metal has a density of 1.55g/cm3 and crystallizes in a cubic unit cell with an edge length of 558.2pm. a. how many Ca atoms are in one unit cell?
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