What is the mass (in kg) of that piece of galena
A piece of galena has a volume of 3.9 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
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At 450 K the rate constant is 15.4 atm-1s-1. How much time (in s) is needed for NOCl originally at a partial pressure of 46 torr to decay to 25.8 torr?
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Solid aluminum reacts with aq H2 SO4 to form H2 gas and aluminum sulfate. when a sample of Al reacts, 425 mL of H2 gas is produced at 24 degree celsius at a press of 744 mmHg. How many grams of Al reacted?
A small, 0.6-lb collar D can slide on portion AB of a rod which is bent as shown. Knowing that r = 8 in and that the rod rotates about the vertical AC at a constant rate of 10 rad/s.
What is the literature Ksp value for potassium hydrogen tartrate at different temperatures?
Determine the probability that an energy level is empty of an electron if the state is (a) below the Fermi level by 2kT and (b) above the Fermi level by 3kT.Hint: Probability of a state not being occupied by electron is = 1 - f(E)
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