Use the rate constants for the forward and reverse reactions to determine whether reactants or products
are favored at equilibrium in this case:
kforward
Keq = kreverse
When Kea < 1, the equilibrium lies to the left (reactants are favored).
When Keq > 1, the equilibrium lies to the right (products are favored)
When Keo = 1, neither reactants nor products are favored.
kforward = 1.5 x 10-5
kreverse = 2.2 x 10-3
1) Reactants are favored.
2) Products are favored.
3) Both are equal.

- 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

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.