An unknown substance has a volume of 2 cm and a mass of 38.6 grams what is the density

Density of the unknown substance,

Explanation:

It is given that,

Mass of the unknown substance, m = 38.6 g

Volume of the unknown substance,

We need to find the density of the unknown substance. The total mass per unit volume of a substance is called its density. Its formula is given by :

So, the density of the unknown substance is . Hence, this is the required solution.

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.

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