Chemistry, 13.09.2019 22:20 cheath104

Requiring industries to recycle 25% of plastics in their manufacturing process is an example of: risk communication risk assessment. risk perception © risk management.

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Answer from: Bri0929

Risk management.

Explanation:

Hello

In this case, it is convenient for us to define the four types of risks regarding to manufacturing processes as follows:

- Risk communication is an interactive process in which the just the exchange of information and opinion about a particular risk among risk specialists and other interested organisms. This is not the answer as it implies a requirement not the aforesaid exchange of information.

- Risk assessment useful to describe the widespread procedure to identify hazards and risk factors and their consequences and to both analyze and evaluate the risk regarding to such hazard. This is not the answer as a requirement is not procedure indeed.

- Risk perception involves how one both thinks and feels about the faced risks. This is not the answer as a requirement is not something coming from a thought or feeling.

- Risk management accounts for the identification, evaluation, and prioritization of risks followed by a coordinated and economical application of resources to minimize, monitor, and control the probability or impact of harmful facts or to maximize the realization of opportunities. This is the answer as a requirement is eligible for the identification and a subsequent application of a resource as the industries must recycle the specified amount via varied industrial processes (recirculation, storage and others).

Best regards.

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

Sorry i think the answer is b

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