Answer:

Explanation:
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In this case, the unit of concentration is molality which is defined by:

Whereas the mass of the solvent is measured in kilograms. In such a way, with the given data, we first compute the kilograms of water:

Then, we solve for the moles of the solute:

Finally since the molar mass of ethanol is 46 g/mol, we compute the grams for the given solution:

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The compound that contains a radical is called NaOH.
Explanation:
Radical, also called Free Radical, in chemistry, a fragment that contains at trivial one unpaired electron. Most molecules include even numbers of electrons, and the covalent chemical bonds including the atoms commonly within a molecule normally consist of pairs of electrons jointly shared by the atoms combined by the bond.