Chapter 2: Q22 P (page 44)
Which drying agent is more efficient, Drierite or phosphorus pentoxide?
Short Answer
Phosphorus pentoxide is more efficient.
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Chapter 2: Q22 P (page 44)
Which drying agent is more efficient, Drierite or phosphorus pentoxide?
Phosphorus pentoxide is more efficient.
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Pentane is a liquid with a density of 0.626 g/mL near
258C. Find the true mass of pentane when the mass in air is 14.82 g.
Assume air density 0.001 2gm/L.
Explain the principle of operation of an electronic balance.
(a) Use the ideal gas law (Problem 1 - 18 ) to calculate the density (g/mL) of helium at and 1.00 bar.
(b) Find the true mass of Na (density = 0.97 g/mL) weighed in a glove box with a He atmosphere, if the apparent mass is 0.823 g.
A sample of ferric oxide , density 5.24g/mL) obtained from ignition of a gravimetric precipitate weighed 0.2961gin the atmosphere. What is the true mass in vacuum?
When is it preferable to use a plastic volumetric flask instead of a glass flask?
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