A 28.8 ml sample of a 1.38 M potassium chloride solution is mixed with 14.3 mL of a 0.890 M lead(II) nitrate solution and
this precipitation reaction occurs:
2KCl(aq) + Pb(NO3)2(aq) + PbCl2 (s) + 2KNO3(aq)
The solid PbCl2 is collected, dried, and found to have a mass
of 2.46 g. Determine the limiting reactant, the theoretical yield,
and the percent yield.

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils. the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?