Multiple Choice
Consider the reaction between hydrogen and oxygen gases to form water: 2H2(g) + O2(g) → 2H2O(l) Which of the following is not conserved in this reaction?
A) atoms
B) moles of atoms
C) moles of molecules
D) mass
Correct Answer:

Verified
Correct Answer:
Verified
Q2: When sodium sulfate, Na<sub>2</sub>SO<sub>4</sub>, dissolves in water,
Q3: The coefficients of a balanced equation can
Q4: Phosphine, PH<sub>3</sub>, a reactive and poisonous compound,
Q5: The figure shows a molecular-level diagram of
Q6: Consider the reaction between sodium metal and
Q8: When copper reacts with sulfur at high
Q9: The combustion of octane is described by
Q10: Aluminum reacts with oxygen according to the
Q11: Which of the following equations is balanced?<br>A)P<sub>4</sub>(s)+
Q12: Which of the following processes is exothermic?<br>A)ice