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SOVA2 [1]
4 years ago
5

Which solution has a molality of 0.25m nacl?

Chemistry
2 answers:
Solnce55 [7]4 years ago
5 0

Molality can be expressed by moles of solute over kilograms of solvent. The question asks the molality of 0.25m NaCl. 0.25m NaCl is equal to 0.25 moles of NaCl over 1 kg of water.

vodomira [7]4 years ago
4 0

0.25 moles of NaCl over 1 kg of water

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Predict the formula of the ionic compound that would result from combining the monatomic ions formed by each pair of elements. M
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Answer:

E - Be and O

A - Mg and N

E - Li and Br

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Explanation:

Be and O

Be is a metal that loses 2 e⁻ to form Be²⁺ and O is a nonmetal that gains 2 e⁻ to form O²⁻. For the ionic compound to be neutral, it must have the form BeO (E-MX).

Mg and N

Mg is a metal that loses 2 e⁻ to form Mg²⁺ and N is a nonmetal that gains 3 e⁻ to form O³⁻. For the ionic compound to be neutral, it must have the form Mg₃N₂ (A-M₃X₂).

Li and Br

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Ba and Cl

Ba is a metal that loses 2 e⁻ to form Ba²⁺ and Cl is a nonmetal that gains 1 e⁻ to form Cl⁻. For the ionic compound to be neutral, it must have the form BaCl₂ (F-MX₂).

Rb and O

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