A measurement of 0.00254 g is the same as

a. 0.254 mg.
b. 25.4 mg.
c. 254 mg.
d. 2.54 mg.
e. none of these.


d

Physics & Space Science

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Hydrogen gas seems to have a diffusivity of about 2.6 x 10^-13 m^2/s when diffusing into iron at 770 K. What would you expect the rate of diffusion or mass flow rate per unit area of hydrogen to be when stored in an iron container at 5 atmospheres pressure, assuming the density of hydrogen at 1 mm in the iron from the containing surface to be 5% of the normal hydrogen density, given by p/RT?

What will be an ideal response?

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In the diagram below label each of the major divisions of Earth's interior

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a. white dwarf; neutron star b. neutron star; black hole c. pulsar; neutron star d. pulsar; white dwarf e. white dwarf; black hole

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Fill in the blank(s) with correct word

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