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Answer is: A. 1.81 mol.
Balanced chemical reaction: FeCl₂ + 2KOH → Fe(OH)₂ + 2KCl.
n(FeCl₂) = 4.15 mol; amount of iron(II) chloride.
n(KOH) = 3.62 mol; amount of potassium hydroxide, limiting reactant.
From chemical reaction: n(KOH) : n(Fe(OH)₂) = 2 : 1.
n(Fe(OH)₂) = n(KOH) ÷ 2.
n(Fe(OH)₂) = 3.62 mol ÷ 2.
n(Fe(OH)₂) = 1.81 mol; amount of iron(II) hydroxide.
Miller collected several organic compounds, both simple (such as formaldehyde) and complex (such as hydrocarbons), commonly found in organisms.
Though his methodology is not undisputed, his results support the concept that abiotic synthesis of organic compounds could have been an early stage in the origin of life.
From the samples collected for chemical analysis, Miller identified a variety of organic molecules that are common in organisms. These included simple compounds, such as formaldehyde (CH2O) and hydrogen cyanide (HCN), and more complex molecules, such as amino acids and long chains of carbon and hydrogen known as hydrocarbons. Miller concluded that organic molecules, a first step in the origin of life, may have been synthesized abiotically on the early Earth.
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Answer:
The order of conductivity will be as follows:
> NaBr > Benzoic acid > sugar
Explanation:
ionizes to give one Al and three ions and thus, produces 4 ions.
Sugar does not ionizes and hence does not produce ions.
Benzoic acid is a weak organic acid and ionizes to produce two ions; and .
Sodium bromide is a strong electrolyte and ionizes to produce 2 ions.
As sodium is strong electrolyte, therefore, its conductance will be higher than benzoic acid.
Therefore, the order of conductivity will be as follows:
> NaBr > Benzoic acid > sugar
<span>The mixture does not have a uniform appearance. </span><span>
The sand stays suspended in the water. (The sand sinks actually but I think by saying suspended, they mean it does not dissolve in water)</span>