What is the molar ratio between water and oxygen, given the following equation? 2c4h10 + 13o2 -> 8co2 + 10h2o

a. 10: 2
b. 10: 13
c. 2: 13
d. 8: 10

B. 10:13

Explanation:

It is clear from the following balanced equation:

13 mole of oxygen (O₂) react with butane (C₄H₁₀) to give carbon dioxide (CO₂) and 10 moles of water (H₂O).

∴ The molar ratio between water and oxygen = (no. of moles of water : no. of moles of water) = (10:13)

So, the right choice is:

B. 10:13

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong