Deck 21 ( 401 - 420) Flashcards
- PIC
- What salt is formed in the following acid/base reaction?
HClO3 + Ba(OH)2 -> ???
a. BaCl2
b. BaClO3
c. H2O
d. Ba(ClO3)2
Ba(ClO3)2
- Proteins are made up of individual monomers called ?
amino acids
- Balance the equation:
_H2(g) + _N2(g) -> _NH3(g)
3H2(g) + N2(g) -> 2NH3(g)
- Which of these processes is an example of a chemical change?
a. methane is burned in air
b. solid gold is melted to make jewellery
c. a bar of copper is stretched into a long copper wire
d. iron is coated with bronze to prevent rusting
methane is burned in air
- PIC
- Oils do not dissolve in water because …
oils are non-polar and water is polar
- PIC
- 1 umol is:
a. 10-3 mol
b. 10-6 mol
c. 10-9 mol
d. 106 mol
10*-6 mol
- PIC
- In a solution of sugar and water, the solvent is the:
a. sugar
b. water
water
- Which of these molecules is a protein?
a. collagen
b. cellulose
c. lysine
d. lanolin
collagen
- Write the usual valence associated with nitrogen in covalent compounds
+ III (+3)
- What is the IUPAC name of the following hydrocarbon?
H2C=CH-CH3
propene
- What is the symbol for gold?
Au
- Draw structural formula of peptide bond
-CO-NH-
- Consider the two equations below. They illustrate that water is:
H2SO4(aq) + H2O(l) -> H3O+(aq) + H2SO4- (aq)
NH3(g) + H2O(l) -> NH4+(aq) + OH- (aq)
a. an acid in both reactions
b. a base in both reactions
c. amphiprotic
d. a weak electrolyte
amphiprotic
- Complete the following reaction:
hydrogenation
H2C=CH2 ————————>
hydrogenation
H2C=CH2 ————————> H3C-CH3
- What is the first element of the periodic table?
hydrogen
- Give the name of arbitrary hydroxy amino acid
threonine, serine, tyrosine
