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irina [24]
3 years ago
14

If someone adds million of small fish to a lake, how would the number of big fish change

Chemistry
1 answer:
Molodets [167]3 years ago
6 0
The population of big fish would increase because they have more food
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deduce the formula of the compound that contains 2+ ions and 3- ions that both have the same electron configuration as argon
yanalaym [24]

\\ \sf\longmapsto [Ar]

  • 2+ means

\\ \sf\longmapsto [Ar]^{2-}

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3 years ago
Un estudiante debe preparar una disolución 2M de NaCl (58,44 g/mol) en un recipiente de 7L. ?Cuántos gramos de NaCl debe agregar
Gnesinka [82]

Answer:

818.2 g.

Explanation:

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<em>M = (no. of moles of NaCl)/(Volume of the solution (L))</em>

<em></em>

M = 2.0 M.

no. of moles of NaCl = ??? mol,

Volume of the solution = 7.0 L.

∴ (2.0 M) = (no. of moles of NaCl)/(7.0 L)

∴ (no. of moles of NaCl) = (2.0 M)*(7.0 L) = 14.0 mol.

  • To find the mass of NaCl, we can use the relation:

<em>no. of moles of NaCl = mass/molar mass</em>

<em></em>

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3 0
3 years ago
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