Equation:
C2H2 + O2 -> CO2 + H2O
Balanced using given coefficients: 2, 3, 4, 5
*Remember: these numbers can be used more than once (as stated in the question)
2 C2H2 + 5 O2 -> 4 CO2 + 2 H2O
Answer: Nitrogen
Explanation: Nitrogen has an atomic number of 7 and an atomic mass of about 14 u
Answer:
Mercury
Explanation:
This is the only metal that exists as a liquid at room temperature
Answer:
74 g/mol
Explanation:
Using a periodic table, we can determine the molar mass by adding together 1 Ca, 2 O, and 2 H. This turns out to be approximately (40+32+2) = 74 g/mol