The answer is B, steam. I took the test.
<span>C. planets orbit in circular paths around the earth.</span>
<span>2 C</span>₆<span>H</span>₁₄<span> + 19 O</span>₂<span> = 12 CO</span>₂<span> + 14 H</span>₂<span>O
Coefficient of O</span>₂ = 19
hope this helps!
Answer:
D. Helium
Explanation:
By definition, the atomic number of an element is the number of protons in its nucleus. 2 protons mean atomic number 2: Helium.
