12. An unknown compound D has been determined to be either
3-hexene, 2-butanone, or ethanal. The...
12. An unknown compound D has been determined to be either
3-hexene, 2-butanone, or ethanal. The unknown is fairly soluble in
water and produces a silver mirror when treated with Tollens
Reagent. What is the identity (by name) of the unknown compound
D?
13. An unknown compound “E” with formula C3H6O reacted with
K2Cr2O7 to form compound “F” (formula C3H6O2). Compound “E” also
gave a positive Tollens test, and it reacted with a common reducing
agent to form “G” (formula...
Section B. For each question in this section, you are required
to list all possible candidate...
Section B. For each question in this section, you are required
to list all possible candidate keys for the given
schema based on the functional dependencies provided. You may wish
to compute the closure of
your key(s) to confirms they are valid.
Question 1
R [A, B, C, D, E, F, G, H, I, J]
{A} -> {B}
{C} -> {B}
{B} -> {D, E, F, G, H}
{D, F} -> {I, J, A}
Question 2
R [A, B, C,...
9. Let S = {a,b,c,d,e,f,g,h,i,j}.
a. is {{a}, {b, c}, {e, g}, {h, i, j}} a...
9. Let S = {a,b,c,d,e,f,g,h,i,j}.
a. is {{a}, {b, c}, {e, g}, {h, i, j}} a partition of S?
Explain.
b. is {{a, b}, {c, d}, {e, f}, {g, h}, {h, i, j}} a partition
of S? Explain. c. is {{a, b}, {c, d}, {e, f}, {g, h}, {i, j}} a
partition of S? Explain.