What kind of vehicle which first took to u. s roads in 1890

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

How would you reduce the volume of gas

What does the cell nucleus do or, how does it function?