The mesosphere protects us from while the stratosphere protects us from
A. UV Rays, Meteors

B. Meteors, UV Rays
C. Storms, UV Rays
D. Meteors, Storms

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

What term describes technology that operates on an atomic level

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .