An aerosol mixture of particulates and sulfur compounds form a grayish-colored substance that is called <u>industrial smog</u>.
<h3>What is Particulate Matter?</h3>
Airborne particulate matter (PM) is a composite of several chemical species rather than a single contaminant. It consists of a complex mixture of solids and aerosols, including dry solid particles, liquid-coated solid cores, and minute liquid droplets. Particles can contain inorganic ions, metallic compounds, elemental carbon, organic compounds, and chemicals from the earth's crust. They can vary greatly in size, shape, and chemical makeup. For the goal of regulating air quality, the particle diameter is used.
Those that have a diameter of 10 microns or below (PM10) are inhalable and can have a negative impact on health. Particles with a diameter of 2.5 microns or less are considered to be fine particulate matter (PM2.5). Consequently, a percentage of PM10 is made up of PM2.5.
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Answer:
Aluminum is the second most abundant metallic element on earth. It has been estimated that 8% of the earth's crust is composed of aluminum, usually found in the bauxite form. On a volume basis, aluminum has become the most widely used non-ferrous metal.
Primary aluminum production is the quantity of primary aluminum produced in a specified period and the quantity of molten or liquid metal tapped from pots that is weighed before transfer to a holding furnace or before further processing.
Explanation:
Answer:
(E)-3-hexene treated with bromine to form racemic mixture.
Explanation:
(E)-3-hexene treated with bromine to form (S)−3−bromohexane and (R)−3−bromohexane.
The chemical reaction is as follows.
Answer:
430 kPa
Explanation:
Use the formula PV/T = PV/T where the left side of the equation refers to the initial values and the right side refers to the final values: (170.2 kPa)(3.5 L)/(298 K) = (P)(1.35 L)/(293 K). The P represents the unknown pressure. Solving this equation gives us a value for P of 433.855 kPa, but because of significant figures (the two from 3.5 L), we round to 430 kPa.
Answer:
G<0, spontanteous
H<0, from equation
S>0, gas to solid
Explanation:
The small bags of silica gel you often see in a new shoe box are placed there to control humidity. Despite its name, silica gel is a solid. It is a chemically inert, highly porous, amorphous form of SiO2. Water vapor readily adsorbs onto the surface of silica gel, so it acts as a desiccant. Despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided, you should be able to make an educated guess about the thermodynamic characteristics of the process. Predict the signs of ΔG, ΔH, and ΔS.
G<0, spontanteous
H<0, from equation
S>0, gas to solid
