Consider the following equation in chemical equilibrium.
c2h4(g) + h2(g) = c2h6(g) + 137 kj
what happens to the amount of ethane (c2h6) when the temperature of the system is increased?
a. the amount of ethane decreases.
b. the amount of ethane increases initially and then decreases.
c. the amount of ethane increases.
d. the amount of ethane decreases initially and then increases.

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

What 3 categories are elements divided