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Platinum has a face-centered cubic crystal structure and a density of 21.5 g/cm3. What is the radius of the Platinum atom?
Extracting aluminium uses a current of 25000 ampere.What is the time taken to produce 10kg of aluminium from Al2O3(liquid
nickel acetate in a volumetric flask and add water to a total volume of 375 mL What is the concentration of the nickel cation? What is the concentration of the acetate anion?
The bottom of a box has a surface area of 25.0 cm2. The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests?
The half-life for the radioactive decay of [U]-238 is 4.5 billion years and is independent of initial concentration. Part A How long will it take for 20% of the [U]-238 atoms in a sample of [U]-238 to decay?
barium metal crystallizes in a body-centered cubic lattic. The unit cell edge length is 502 pm, and the density of the metal is 3.50 g/cm3. Using this information.
one day you notice that the outside temperature increase by 16 degrees Fahrenheit between your early morning jog and your lunch at noon. what is the corresponding change in temperature in the Celsius and Kelvin scales?
A sample of concrete contains cement, gravel, crushed rocks, sand, and water. Each of these contains different metals and minerals and hence has different colors and different properties. Which term or terms could be used to describe this sample o..
Calculate the heat release when 62.0 g of steam at 129 C is converted to water at 50 C. Assume that the specific heat of water is 4.184 J/g x C
The Planck distribution gives the energy in the wavelength range dA at the wavelength A. Calculate the energy density in the range 650 nm to 655 nm inside a cavity of volume
How much time (in minutes) will it take for the water heater to heat the 5.5 Liters of water from 23 Celsius to 49 Celsius?
The following gas phase reaction is second order. 2C2H4(g)--->C4H8(g) Its half life is 1.51 min when [C2H4] is 0.250 M. a.What is k for the reaction?
What volume of N2O, collected over water, at a total pressure of 94kpa and 22 Celcius, can be produced from 2.6g of NH4NO3.
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