How many grams of the excess reactant are left over
How many grams of the excess reactant are left over according to the reaction below given that you start with 10.0 g of Al and 19.0 grams of O2? Reaction: 4Al + 3O2 → 2Al2O3 *
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Three equal point charges, each with charge 1.35 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.600 m. What is the electric potential energy U of the system?
A rectangular block of ice 11 m on each side and 1.8 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. a) How high does the top of the ice block float above the water level?
If a speaker gives a sound intensity of 10^{-6} W/m^2 at a certain point, what is the sound intensity level beta at that point?
As an American, do you recognize the success of the European Union? Do you see it as a potential threat to American dominance in world politics? Why? Why not? Are you prepared to give up your dollars for Euros?
A ball on a porch rolls 60 {rm cm} to the porch's edge, drops 40 {rm cm}, continues rolling on the grass, and eventually stops 80 {rm cm} from the porch's edge.
Explain what the "big five' personality traits are (neuroticism, extroversion, openness to experience, agreeableness, conscientiousness,) which characteristics are likely to change from early to middle adulthood, and which characteristics are likely
How many cubic meters of gas must be burned each day to maintain an inside temperature of 24.5°C if the outside temperature is 0.0°C? Disregard radiation and energy loss by heat through the ground.
Due to friction with the air, an airplane has acquired a net charge of 1.70 10-5 C. The plane moves with a speed of 2.90 102 m/s at an angle θ with respect to the earth's magnetic field, the magnitude of which is 5.00 10-5 T. The magnetic fo
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