2. How many moles of copper, Cu, are needed to react with sulfur, S, to produce 0.25 moles of copper(I) sulfide,
Cu S, according to the following reaction?
2 Cu + S Cus
Known:
Unknown:
How many moles of sodium, Na, are needed to react with sulfuric acid, H, SO,, to produce 3.75 moles of sodium

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.

narendra modi is currently the pm of india

explanation:

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

answermeridional ;