What is the average oxidation number of iron in oxide
Iron forms a magnetic oxide with the formula Fe3O4 that contains both Fe2+ andFe3+ ions. What is the average oxidation number of iron in this oxide?
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It is traveling directly at an infinite plane of charge with a charge distribution of +3.21 C/m2. If it is currently 1.29 m away from the plane of charge, how close will it come to the plane before stopping?
In one such preparation,water (20 mL), sodium bromide (20 g) and cyclohexanol (10.5 mL, density 0.96) were mixed andconcentrated sulfuric acid (20 mL; density 1.85) was added dropwise to the swirled solution overabout two minutes.
A point charge (-5.0 µC) is placed on the x axis at x = 4.0 cm, and a second charge (+5.0 µC) is placed on the x axis at x = -4.0 cm. What is the magnitude of the electric force on a third charge (+2.5 µC) placed on the y axis at
The length of the hub is 12 inches. What is the required interference? How much torque may be transmitted assuming a coefficient of friction of 0.18?
Two capacitors C1 = 2.5 mF and C2 = 5.0 mF are connected in parallel. If a voltage of V = 120 volts is applied across the capacitors, what is the energy stored in capacitor C2.
Draw a thermal circuit from inside to the outside of the tube and calculate each thermal resistance. Calculate the rate of heat loss per unit length, q', from the pipe. c) Calculate the pipe skin tempeartures inside and outside.
A gas syringe at 20 Celsius contains 20ml of Co2 gas. The pressure of the gas in the syringe is 1.0 atm. What is the pressure in the syringe at 20 Celsius if the plunger is depressed to10ml?
A student flips a coin three times, and it comes up heads each time. The student decides that the coin must be unfair. The student is demonstrating a failure to understand which one of the following theorems or concepts?
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