Gawain sa Pagkatuto Bilang 18: Malaki ang naging epekto ng mga pagbabago sa politikal na kalagayan ng mga Filipino noong panahon ng
mga Espanyol. Makikita pa rin ang impluwensyang ito sa kasalukuyan.
Gumawa ng diagram na na nagpapakita ng kasalukuyang balangkas ng
pamahalaan ng Pilipinas at lagyan ng sagisag ang mga nanatili at hindi
nanatili sa pamahalaang kolonyal. Isulat din ang epekto nito sa
kasulukayang pamahalaan.​

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.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.