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3 years ago

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Breaking down rock through chemical changes?

1 answer:

soldi70 [24.7K]3 years ago

6 0

Another type of weathering that attacks rocks is chemical weathering, a process that breaks down rock through chemical changes. The causes of chemical weathering include action of water, oxygen, carbon dioxide, living organisms, and acid rain. Chemical weathering can produce new minerals as it breaks down rock.

Explanation:

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How would you convert 500cc of 2M H2so4 in g/l and normality?

Ann [662]

Concentration :

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<h3> </h3><h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

500 cc of 2M H₂SO₄

V = 500 cc = 0.5 L

mol H₂SO₄

$\tt mol=M\times V=2\times 0.5=1$

mass H₂SO₄ (MW = 98 g/mol)

$\tt mass=mol\times MW=1\times 98=98~g$

concentration in g/L :

$\tt \dfrac{98}{0.5}=196~g/L$

concentration in normality

Relationship between normality and molarity

N = M x n (n=valence , amount of H⁺ or OH⁻)

so :

$\tt N=2\times 2(n=2~for~H_2SO_4\rightarrow 2H^+)\\\\N=4$

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