In the chemical reaction CH4 + 2O2 → CO2 + 2H2O, the atoms in the reactants, are

Classification of

Chemical Reactions

• Combustion: One reactant is

always oxygen and another

reactant often contains carbon

and hydrogen

• Burning of methane

• CH4 + 2O2 > CO2 +2H2O

Explanation:

answer: mercury

explanation:

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.