Au = 79
1s22s22p63s23p63d104s24p64d105s25p64f145d106s1
Or
[Xe] 4f14 5d10 6s1
Answer:
2:1
Explanation:
2 hydrogen to 1 mole oxygen
Answer:
A. Strong Acid Strong Base
D. ... 100%
Explanation:
The reaction of hydrobromic acid and sodium cyanide is a strong acid-strong base reaction. In solution, sodium cyanide functions as a strong base and reacts violently with strong acids. For strong acid- strong base reaction, the extent of reaction is usually 100%.
The molecular reaction equation is
NaCN(aq) + HBr(aq) ---------> NaBr(aq) + HCN(aq)
Ionically:
H3O+(aq) + CN- (aq) ----------> HCN(aq) +H2O (l)
HCN(aq) is a weak acid.
The answer to this question is a