Question

I have 5 questions in chemistry: 1- Samples of the following volatile liquids (liquid that evaporates at room temperature) are opened simultaneously (at the same time) at one end of a room. If you are standing at the opposite end of this room, which species would you smell first? [Assume that your nose is equally sensitive to all these species.] 2- What volume (in cm3) of lead (of density 11.3 g/cm3) has the same mass as 100. cm3 of a piece of redwood (of density 0.38 g/cm3)? 3- Lithium metal is the only member of Group 1 that reacts directly with nitrogen to produce a nitride, Li3N. If 124.0 g of Li and 98.2 g of N2 are mixed, and 195 g of Li3N are actually obtained from the reaction, what is the percent yield? 4- 25.00 mL of a solution of oxalic acid, H2C2O4, are titrated with 0.2586 M NaOH(aq). The stoichiometric end point is reached when 43.42 mL of the solution of base is added. What is the molarity of the oxalic acid solution? Oxalic acid reacts with sodium hydroxide as shown below: H2C2O4(aq) + NaOH(aq) → Na2C2O4(aq) + H2O(l) 5- Give the full electron configuration of bismuth . Arrange the orbitals in order of increasing energy?

Answer 1

.Now imagine what happens if the liquid is in a closed container. Common sense tells you that water in a sealed bottle doesn't seem to evaporate - or at least, it doesn't disappear over time. But there is constant evaporation from the surface. ... When these particles hit the walls of the container, they exert a pressure.

Answer 2

volatile liquid is one that evaporates or vaporizes quickly at room temperature. Volatile liquids have low boiling point. As a result, they evaporate very easily at room temperature. All the above liquids are volatile.