Average rate of the reaction
In the first 12.0 s of the reaction, 1.8×10-2 moles of O2 is produced in a reaction vessel with a volume of 0.260 L. What is the average rate of the reaction over this time interval?
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Determine the amount of food you must consume to reach an LD50 exposure, when the concentration of Red Dye #40 in the food is 5.283x10^-4mol/L. Given that LD50=mg/kg and a human weighs 60kg.
A weather balloon has a volume of 750 L when filled with helium at 8 oC at a pressure of 380 torr. What is the new volume of the balloon when the pressure is 0.20 atm and the temperature is -45 oC?
At what distance along the central perpendicular axis of a uniformly charged plastic disk of radius 0.6m is the magnitude of the electric field equal to one-half the magnitude of the filed at the center of the surface of the disk?
An open gas turbine is equipped with a regenerator. The compressor is 87% efficient with air entering the compressor at 290K and 100kPa. The pressure ratio is 8.
MgNH4PO4.6H2O loses H2O stepwise as it is heated. Between 40c and 60 the monohydrate is formed, and above 100 celcius the anhydrous material is formed. What are the phosphorus percentage of the monohydrate and of the anhydrate material?
An insulated cylinder is initially filled with saturated R-134a vapor at a specified pressure. The refrigerant expands in a reversible manner until the pressure drops to a specified value.
Draw the equivalent circuit referred to (i) the high- and (ii) the low-voltage sides. Label the impedances numerically. Consider the transformer to deliver its rated kilovoltamperes at 0.80 power factor lagging to a load on the low -voltage side wi
The uncertainty B in some observable B is given by a formula B=sqrt<B^2>-<b>^2. Use this formula to determine uncertainty in position and momentum for the ground state of a quantum mechanical particle of mass m in a one-dimensional 'bo
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