Which reaction is a combustion?

a. fe + s8 → fes
b. h2o → h2 + o2
c. zn + hcl → zncl2 + h2
d. nacl + agno3 → nano3 + agcl
e. hbr + naoh → nabr + h2o
f. c10h8 + 12 o2 → 10 co2 + 4 h2o

What can be found in every skeletal muscle? a. nerves, bones, cartilage, and connective tissue b. tendons, cartilage, nerves, and blood vessels c. muscle fibers, nerves, connective tissue, and blood vessels d. tendons, nerves, blood vessels, and bones

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.