Determine the number of collisions do the he atoms
Determine the number of collisions do the He atoms make with this surface in 15 seconds when a solid surface with dimension 3.5 mm* 3.0mm is exposed to helium gas at 90 Pa and 500K.
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Determine the mass of FeO and Fe2O3 in the original sample. You are given 10.00 grams of a mixture of FeO and Fe2O3. Complete reduction of this mixture yields 7.58 grams of pure Fe.
At 154.4°C a 72.2 g sample of copper is added to an insulated vessel containing 165.0 mL of an unknown hydrocarbon at 22.7 °C whose molar mass is 134.1 g/mol and density is1.26 g/mL.
Utilize rational function to reply the following f(x)= 4x-6 over 2x squared-x-3. x-intercepts y- intercepts vertical asymptotes horizontal (end behavior) asymptotes hole and graph function.
The activation energy for a reaction A → B is 118.0 kJ/mol. Suppose that the frequency factors for the catalyzed and un-catalyzed reactions are identical.
The angles of elevation θ and φ to the airplane are being continuously monitored at 2 observation points A and B. How can you write the equation giving distance d between plane and point B in terms θand φ.
Calculate the density of the heated air in the balloon when a small hot-air balloon is filled with 1.02 x 10^6 L of air (d = 1.20 g/l). As the air in the balloon is heated. It expands to 1.13 x 10^6 L.
At 250C determine the % empty space in 1 mole of water (d= 0.9971 g/ml). The volume of a water molecule can be taken as of the volumes of the oxygen atom and the two hydrogen atoms.
Calculate an empirical formula of the compound that was produced if 5.40g of bromine reacted with 8.58g of iodine. Calculate the molecular formula of this compound if we know that its molar mass is 206.8g?
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