The equilibrium constant, Kp, equals 3.40 at 25°C for the isomerization reaction: cis-2-butene ⇌ trans-2-butene. If a flask initially contains 5.00 atm of each gas, the system is.

The system is not at equilibrium and the reaction will shift to the right until Kp = Q

Explanation:

For the reaction:

cis-2-butene ⇌ trans-2-butene

Kp is defined as:

Where P is the pressure of each gas in equilibrium.

If initially, a flask contains 5.00atm of each gas, Q of reaction will be:

Q = 5.00 atm / 5.00 atm = 1.

As Kp > Q, the system is not at equilibrium and the reaction will shift to the right until Kp = Q

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- 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