Calculate the volume of oxygen in excess when 20cm3 of hydrogen is sparked in 15cm3 of oxygen at a temperature of 1500C according to the following equation:
2H2(g) + O2(g)  2H2O(g)

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

is there any options? maybe im just not seeing them but i need the options to

-love shrooms