If the reaction fe2n(s)+32h2? 2fe(s)+nh3(g)comes to equilibrium at a total pressure of 1 bar, analysis of the gas shows that at 700. and 800. k, pnh3/ph2 = 2.165 and 1.083, respectively, if only h2(g) was initially present in the gas phase and fe2n(s) was in excess. calculate kp at 700. k. calculate kp at 800. k. calculate ? h? r assuming that it is independent of temperature. calculate ? s? r at 700. k. calculate ? s? r at 800. k. calculate ? g? r for this reaction at 298.15 k.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.