Calculate the equilibrium constant for the production of Mgo when the equilibrium concentrations are 0.01 M for Mg. 0.01 for 07, and 2M for Mgo.

2Mg + 02 <-->2Mgo

a. 4 x 10^-6
b. 2 x 10^4
c. 2 x 10^6
d. 4 x 10^6

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

answerlinnaeus;