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PSYCHO15rus [73]
3 years ago
9

How can rocks be distinguished from each other?

Chemistry
1 answer:
marysya [2.9K]3 years ago
5 0

Answer:

Different types of rocks have different chemical composition.

Explanation:

Rock can be distinguished from each other by their chemical composition which is a product of the minerals they contain.

  • A rock is an aggregate of minerals.
  • Different suites of rocks have their inherent mineralogical composition and facie.
  • This is because, these rocks form under different types of conditions from time to time.
  • Igneous rocks form from molten rocks, sedimentary rocks form from pre-existing rocks and metamorphic rocks for under elevated temperature and pressure conditions.
  • All these conditions plays important roles in the differentiation of minerals in the rock.
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What is nitrogens formula​
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N2 (but the 2 is a subscript) i think

Explanation:

i looked it up

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24. a. Suppose different parts of a sample material
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One can conclude that the metal is an alloy.

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Certain gases in the atmosphere trap heat on Earth.
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In the citric acid cycle, malate is dehydrogenated to oxaloacetate in a highly endergonic reaction with a ΔG’o of +30 kJ mol-1:
Doss [256]

Answer :  The value of K_{eq} of this reaction is, 5.51\times 10^{-6}

At equilibrium, [L-malate] > [oxaloacetate]

Explanation :

The relation between the equilibrium constant and standard Gibbs free energy is:

\Delta G^o=-RT\times \ln K_{eq}

where,

\Delta G^o = standard Gibbs free energy  = +30 kJ/mol = +30000 J/mol

R = gas constant = 8.314 J/K.mol

T = temperature = 25^oC=273+25=298K

K_{eq}  = equilibrium constant  = ?

The given reaction is:

\text{L-malate}+NAD^+\rightleftharpoons \text{oxaloacetate}+NADH+H^+

\Delta G^o=-RT\times \ln K_{eq}

+30000J/mol=-(8.314J/K.mol)\times (298K)\times \ln K_{eq}

K_{eq}=5.51\times 10^{-6}

Therefore, the value of K_{eq} of this reaction is, 5.51\times 10^{-6}

As, the value of K_{eq} < 1 that means the reaction mixture contains reactants.

At equilibrium, [L-malate] > [oxaloacetate]

7 0
4 years ago
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