How many moles are in 170.3 grams of Carbon?
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There are 14.2 moles of carbon in 170.3 grams of carbon

Explanation:

The mass of one mole of carbon is known as the molar mass of carbon. the unit of molar mass is grams/mole, g/mol.

The molar mass of carbon is 12 grams. This means that for every 12 grams of carbon, one has one mole of carbon.

To determine the number of moles of carbon present in 170.3 grams of carbon, the given mass of carbon, that is 170.3 grams is divided by 12.

The formula to use is: number of moles = mass of substance/molar mass of substance

Number of moles of carbon = 170.3 g / 12 g/mol = 14.2 moles

Therefore, there are 14.2 moles of carbon in 170.3 grams of carbon

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.

a is the correct answer