A solution is formed by mixing 0.400 mol NaOH into 0.800 kg water. What is the best set up to find molality?

m = mol solute/kg solvent

Calculate the molality of the solution.
.500m
A solution is formed by mixing 15.2 g KOH into 1.200 kg water. Use the periodic table to find the moles of solute.

mol KOH
Answer 1) 0.271 mol KOH
Answer 2) 0.226 m

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

i believe that it is a exoplanet

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increased stability in the completion of fluorine's outer shell.