Hey there,
The answer for that blank is 125.
Hope this helps :))
<em>~Top♥</em>
Answer:
Pls attach an image so I can do it, then I can answer
Explanation:

How did griffin help build our understanding of genetics?

He showed that cells contain a transforming factor. They have different genes. Two brothers inherit different sets of alleles from their parents.
Answer:
2 C2H6 + 4 O2 → 2 C + 2 CO2 + 6 H2O
Explanation:
2 C2H6 + 4 O2 → 2 CO2 + 6 H2O is the balance equation for the combustion of ethane. In the question, the equation for combustion of methane is unbalanced i. e. C2H6 + O2 → CO2 + H2O so by putting coefficient 2 in front of ethane, 4 in front of oxygen, 2 in front of carbondioxide and 6 in front of water which can balance the unbalanced equation for combustion of ethane