College Chemistry Quiz
20 questions · no time limit
0:00
REACTIONS & STOICHIOMETRY
Question 1 of 20
No time limit
Current
Answered
Flagged
Not seen
The decomposition of mercury(II) oxide is represented by: 2HgO(s)→2Hg(l)+O2(g)2HgO(s) \rightarrow 2Hg(l) + O_2(g). This reaction was historically important in the discovery of oxygen. A student heats a sample and observes liquid mercury droplets and gas evolution. What evidence would best distinguish this as decomposition rather than a phase change?
YOUR PROGRESS
20
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
KEYBOARD
Pick an answer ABCDE
Next question ↵→
Previous ←
Flag for review F
Answers save as you go · flagged questions come back at the end