Consider the following reaction and its equilibrium constant: CH4(g)+ NH3(g)↔HCN(g)+ 3 H2(g)Kc= 15 A reaction mixture contains 0.33M CH4, 0.022M NH3,0.55M HCN and 1.0M H2. Which of the following statements is true concerning this system?
a. The reaction will shift in the direction of products.
b. Kcwill decrease.
c. The reaction quotient, Qc, will decrease.
d. The system is at equilibrium

Please explain how to do this

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

i believe that it is a exoplanet

it is b that is the answer.

c. orbital shape i hope this is correct