Free expansion refers to uninhibited or provoked expansion, i.e. it’s expanding on its own, by itself. The only situation in which this occurs is B, as the gas is allowed to expand by itself. A involves a reaction that forces the expansion, C involves the gas performing work, and D involves thermal expansion.
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Answer:
.06 M NA+
Explanation:
You go from (.02M Na3PO4 / 1) x (3 mole Na+ / 1 mole Na3PO4) = .06 M Na+
Speed= distance/time
Speed= 280/4
Speed= 70km/hr
Answer:- 3.0 g
Solution:- Cyclohexanol gives cyclohexene on acid catalysis. Water molecule is actually given out in the reaction.

There is 1:1 mole ratio between cyclohexanol and cyclohexene. Let's calculate the theoretical yield of cyclohexene using stoichiometry as:

= 3.0 g Cyclohexene
Therefore, the theoretical yield of cyclohexene is 3.0 g.