A 20.0 L tank contains 4.86 * 10-4 kg of helium at 18.0 C. The molar mass of helium is 4.00 g/mol. (a) How many moles of helium are in the tank? (b) What is the pressure in the tank, in pascals and in atmospheres?
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A:
A 20.0 L tank contains 4.86 * 10-4 kg of helium at 18.0 C.
The molar mass of helium is 4.00 g/mol. (a) How many moles of helium
are in the tank? (b) What is the pressure in the tank, in pascals and
in atmospheres?
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