Which compounds represent the reactant(s) in the chemical equation below?

c3h8 + 5o2 → 4h2o + 3co2
a) only c3h8
b) both c3h8 and 5o2
c) 4h2o
d) 3co2

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Which chemical equation is unbalanced? which chemical equation is unbalanced