Chemistry, 06.03.2021 14:00 Derrick253

How to write a composition about civil engineering

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Civil engineering is the term for the work of designing and building infrastructure. It usually means large structures, like bridges, dams, buildings, and tunnels. It also covers complicated networks such as water, irrigation and sewerage networks. It also covers the construction of houses and homes. Civil engineers can be involved in all stages in the life of infrastructure, from planning and construction to maintenance and demolition. Civil engineering often overlaps with architecture.

Civil engineering has many different areas or disciplines. Some important areas are geotechnical, structures, environmental, construction management, hydrology, transportation, and materials. It is important for civil engineers to have an understanding of all these disciplines as projects often involve many of them at the same time.

Bridge Pont Lafayette and city of Lyon.
Civil engineers are responsible for lots of the things that are required for a society to function properly. Safe water supplies, sewage treatment, roads, railways and buildings are all part of civil engineering.

To work in civil engineering requires training. Construction workers will train at a center and 'on the job' (training while doing the job), sometimes with apprenticeship.

To be a professional in civil engineering requires study at a university or college. Civil engineers often study subjects like structures, materials, physics and calculus.

The profession of civil engineering is represented by professional bodies in various countries. In the UK the Institution of Civil Engineers promotes civil engineering as a discipline and supports engineers throughout their careers. The American Society of Civil Engineers performs a similar task in the USA.

Professional engineers often choose to become Chartered Engineers. Chartership shows employers and clients that they are both qualified and experienced in their jobs. Civil engineers usually have to write a big essay and take an interview with a panel of experienced engineers to gain chartership

Answer from: sparrgrovekyle

Explanation:

Civil engineering has many different areas or disciplines. Some important areas are geotechnical, structures, environmental, construction management, hydrology, transportation, and materials. It is important for civil engineers to have an understanding of all these disciplines as projects often involve many of them at the same time.

Answer from: Quest

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = $25^oc$ = 298 k $)0^oc=273kelvins$

$o_3+3no\rightarrow 3no_2,\delta h_{reaction}=? [/)</p><p>[tex]\delta h_{no}=90.4kj/mol$

$\delta h_{no_2}=33.85kj/mol$

$\delta h_{o_3}=142.2kj/mol$

$\delta h_{reaction}=\sum \delta h_{products}-\sum\delta h_{reactants}=3\times\delta h_{no_2}-(3\times \delta h_{no}+\delta h_{o_3})$

$\delta h_{reaction}=33.85-(90.4+142.2)=-311.85kj/mol$

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

$v_{no}=12.00 l,v_{o_3}=8.50 l$

$pv_{no}=n_{no}rt=1atm \times 12.00 l=n_{no}\times 0.0821 atml/k mol \times 298 k$

$n_{no}=0.49 moles$

$pv_{o_3}=n_{o_3}rt=1atm \times 8.50 l=n_{o_3}\times 0.0821 atml/k mol \times 298 k$

$n_{o_3}=0.34 moles$

according to reaction 3 moles no are reacting with 1 mol of $o_3$ ,then 0.49 mol of no will react with $\frac{1}{3}\times 0.49$ moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and $o_3$ is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

$\delta h_{reaction}\times \text{moles of no}=-311.85kj/mol\times 0.49 mol=-152.80kj/mol$

Answer from: Quest

a corroding iron, if that's one of your choices

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