Which of the following is true about the lewis dot representation in a covalently bonded molecule? the inner shell electrons are shown using small dots. the most electronegative atom is shown in the middle. the bonded pair of valence electrons are shown by lines. the non-bonded pair of valence electrons are shown by cross marks.

A Lewis dot diagram depicts bonding between atoms in a molecule. Since it is the valence electrons that are involved in bonding, a lewis dot structure allows for a clear visualization of the number of bonding electron pairs as well as the number of lone pairs (if any) around an atom.

In this representation, the bonded pairs are depicted by lines between atoms and lone pairs which do not participate in bonding are represented by dots.

Ans: C) The bonded pair of valence electrons are shown by lines.

The bonded pair of valence electrons are shown by lines.

Explanation:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation: