What steps have power plants taken to reduce the amount of sulfur oxides released into the air

1 answer:

6 0

Answers are:
1) shift to fossil fuels or coals with lower amount of sulfur.
2) removal (spray dry system) of the sulfur oxide after combustion, removal sulfur during combustion (fluidised bed combustion) or reducing the sulpfur before combustion (washing the coal).
3) improve efficiency of conversion of fuel and coal to electric power.

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In an atom of barium, how many electrons have: ℓ = 0 mℓ = 1

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First look for the atomic number and that is the electron for barium

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If 42.7 of 0.208 M hydrochloric acid are needed to completely neutralize a solution of calcium hydroxide, how many grams of calc

Montano1993 [528]

Answer:

0.329 g

Explanation:

In the context of this problem, we have a chemical reaction between hydrochloric acid and calcium hydroxide. HCl is the acid here and calcium hydroxide is the base. Hence, we have an acid-base reaction, also known as neutralization reaction.

In a neutralization reaction, water is produced as a product, as well as a salt that we obtain after we exchange the cations: calcium bonds to chloride and hydrogen bonds to hydroxide (the latter is the formation of water). This means we also produce calcium chloride as a product. The overall reaction represents this as:

$Ca(OH)_2(aq)+2 HCl (aq)\rightarrow CaCl_2 (aq)+2 H_2O (l)$

Firslt of all, we wish to find the number of moles of HCl present. Having molarity and volume, this is done by applying the molarity formula. It states that molarity is equal to the rate between moles and volume:

$c_{HCl}=\frac{n_{HCl}}{V_{HCl}}$