Find concentration in kilograms of silicon per cubic
The concentration of silicon in an iron-silicon alloy is 0.55 wt%. What is the concentration in kilograms of silicon per cubic meter of alloy? Assume that the densities for iron and silicon are, respectively, 7.87 and 2.33 g/cm3.
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For an alloy that consists of 28.9 wt% Pb and 71.1 wt% Sn, what is the composition (a) of Pb (in atom percent), and (b) of Sn (in atom percent)? The atomic weights for Pb and Sn are 207.2 and 118.69 g/mol, respectively.
What is the concentration in kilograms of silicon per cubic meter of alloy? Assume that the densities for iron and silicon are, respectively, 7.87 and 2.33 g/cm3.
Two circular disks spaced 0.50mm apart form a parallel-plate capacitor. Transferring 1.80x10^9 electrons from one disk to the other causes the electric field strength to be 2.50x10^5 N/C. What are the diameters of the disks?
The water begins at a temperature of 16.0 °C and needs to be heated to 61.0 °C. If the area of the solar panels is 32.0 m2, what volume of water can be heated in one hour?
Molybdenum forms a substitutional solid solution with tungsten. Calculate the concentration (in weight percent) of molybdenum that must be added to tungsten to yield an alloy that contains 1.16 x 1022 Mo atoms per cubic centimeter.
Make a circuit where 2 lights stay on at all times, but you can turn 2 lights on/off. Diagram the circuit: in the drawing, include the current, potential and power for each resistor(these are to be made up), find the total current and power.
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